I need to figure out what graphics card i need and quickly!

Not to many slimline cards that will work in there unless you change the psu.

You might be able to make a Sapphire HD 7750 Low Profile http://www.amazon.com/gp/product/B0095MRLJ2/ref=as_li_qf_sp_asin_il_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B0095MRLJ2&linkCode=as2&tag=b0b929-20 work.

http://www.ebay.com/bhp/pci-express-to-pci-adapter-card

Looking at everything no matter what you're not gonna be happy or satisfied with the results I'd take that 70 invest it into a new mobo then go after a 7730 or 7750 both cards would do reasonable with your cpu,ram, and psu. Anything else you'd really just going to be dumping money into a no win situation. Its MHO thats why no one else has really touched this thread. Im not trying to offend but its probably a $150 job to get it to run and no promises that it would run satisfactory. CPU is decent Ive seen worse, DDR2 ram is slow but I have a friend who is able to run some games like that. The problem is the budget you need to convert your PCI slot to PCIe around $25, and then a 7730(which I dont believe has come out yet) 7750-7770 radeon card. All which are not gonna be found unless used for less than $90 and that is a hard price to come by. It can be done but youre looking at investing more than you're budget allows. I do hope someone comes along and proves me wrong but its been a couple days since you've posted and I only see my and that other guys reply. Again I'd put that $70 in a new mobo with a PCIe slot. Get a couple more GB of RAM, Then buy a $100 GPU and you should be good to go. Other than that, save your money for a better rig.

You have a good start. If your looking for a solid GPU one that wont strain your PSU, stick with the 7750 no extra plugs needed it plugs into your PCI slot only. With the Catalyst Control suite it makes it great for Movies and games. Your cpu is really like falling off a cliff solid performance a little slow but once you get into gaming it just falls off the edge and crashes. Its about $40 cpu for $85 you can get one thats as functional as an i3 which can handle team fortress and bf2-3; AMD Athlon X4 750k $85. With that in mind you'l need a mobo with a socket to fit that, GIGABYTE GA-F2A85XM-D3H FM2 AMD A85X (Hudson D4) HDMI SATA 6Gb/s USB 3.0 Micro ATX AMD Motherboard $80.00. Then you have ddr2 ram, you need ddr3 Kingston HyperX 8GB 240-Pin DDR3 SDRAM DDR3 1600 Desktop Memory Model KHX1600C10D3B1/8G this is 2x4GB stcks $55.00. Yeah a new psu unit is a must I didnt realize it was only 160w. You need at least a 350w psu I havent seen a modern rig be sold with less than 300w's. Presler is wrong in the GPUS though, the 650ti is good card the 770 is overkill for what you want besides the 770 is $400+ you can get away with upgrading your whole PC for that much maybe less. So far 80+85+55=220, PSU RAIDMAX SMILODON Extreme Black ATX-612WEBP 1.0mm SECC Steel ATX Mid Tower Foldout MB Computer Case With 500W Power Supply $90.00 I went case/psu because no one thinks about the fact they would need one until they get their parts and its too late, I've done it a couple times. You get a 500w PSU with it as well more than enough power for what you need and a case, for $90 bucks what you would spend on one or the other outside of this combo. $360.00 and you should be chugging away at team fortress. This price may be able to be knocked down a little I just wanted to show you what you would be in for. In your circumstance its honestly more than a simple GPU into a slot and you'll get nice graphics and thats it. This info. is what I'll leave you with for you to think about. PC's are amazing machines but on the other hand sometimes they can be chores because you head down a rabbit hole not knowing if you do one thing you'll more than likey have to do something else. If you want to persue the upgrade's I'd be more than happy to send you links and pricing for you to look over. The ones I sent are general suggestions. I can even go into explainations of why I chose that mobo, but I kinda already did with the CPU and PSU/case. So like I said I'll keep an eye out for your reply. Again Im not trying to be mean and I hope you dont think I was or am, I was just trying to let you know this is gonna be a labor of love. If its budget constraints, trust me I know about those, I was sitting on an old 2008 AMD processor , 4GB of ddr2 ram and I built my rig up being smart, now Im sitting pretty with a great PC.

Yeah I just wanted to be upfront and everything, if you got a cheap GPU its probably really old and I would hate to say oh yeah thats fine and it backfire. Don't hesitate to PM me if you have anything on your mind. Any question no matter how stupid you might think it is. Believe me Ive asked plenty. Also most if not all the guys/girls on here are REALLY friendly and they know what its like to be in your's or someone else's shoes. Even if I can't answer I'll find someone who can. I have a couple guys I throw things too when I can't seem to figure something out. Again not many people answered cause they either couldn't, had the same feeling I did when I answered, or didn't wanna make you feel cruddy. Again PM me if you need anything I'm almost always on here at least once or twice a day.