Looks good to me... though I don't know if it will provide maximum gaming performance. Have you also checked your motherboard's QVL, to see if the RAM is fully tested and thus compatible with your mobo.
thanks for the quick replies.
@r_manic : yeah, I'm not looking to run Crysis with max settings, if the copy of COD World at War that comes with the graphics card runs well, I'll be a happy man I hadn't though to check the mobo's qvl, but if I read it correctly just now, the RAM should work fine.
@AKM880: thanks for the tip. One question I have is how strong of a PSU do I need. The Newegg PSU calculator suggested 380 watts, but is 400 watts enough, or should I go for a ~450-500 watt psu? (I'm looking at this psu if 400 watts is enough)
One more thing you can change is the graphic card.
Yours is a DDR2 card.
The 1GB memory sounds good but is not useful.
Get a 512 MB DDR3 card like HD 4670 or 9600GT.
They will perform much better than That 9600GSO.
The thing about psu's is not the wattage, but the amps the +12 rails provide...and also the quality of the product...some of the cheap psu's are made out of crappy materials that dont last long, and in the end can end up damaging some computer components...
I personally decided to go with a Raidmax PSU and havent had any problems with it for over a year now (*knock on wood*) but that was because I really couldnt afford anything else and at the time and the PSU I got was on too good of a sale to pass up...
getting this combo not only gives you a beefier processor, but also gives you the chance in trying to unlock the other two cores the X2 550 has (although it isnt guaranteed that they will work)...even if the extra cores dont work, you will have a better gaming processor anyways...I just wanted to throw that out there...
+1 to the CPU upgrade to the Calisto. It'll be worth it. If you need to save a few dollars, wait a week. Do it right the first time, or you'll be looking to upgrade later, which means buying new parts.