Ok I respect your advice a lot because I am very new at this, but I have a couple of questions.
1. Is 8GB worth getting, or is 4GB good enough?
2. I know this will be a great computer, but i want to know it won't be overkill like I want a good gaming computer, times are hard and am willing to pay this much, but paying less but getting good enough is fine for me.
3. Also are cases and Power supplies always that expensive, or is this really needed.
4. What is the preferred resolution for most gamers, just would like to know for price purposes
I don't want to seem rude, because I really appreciate your help, but I hope you understand
For games 4GB is plenty, if you are using 64 bit CS4 you might be able to use 8GB so depending on the amount of work you do with it you may want to upgrade to 8GB, however if you have 32 bit CS4 you wont get each program to use more than 2GB of ram so it wont affect it too much.
I figured since you had the budget i would use it, however if you want to cut down a bit and still get good performance that is doable. You dont save too much by dropping down to an antec 300(only $15), i would still suggest sticking with the 750 watt PSU, it will save you money in the long run if you need to crossfire in the future to get more graphics horsepower. http://www.newegg.com/Product/Product.aspx?Item=N82E168...
There is no 'preferred resolution', higher resolutions like 1920x1200 look better than 1280x1024 but need a 4890 to get max detail rather than a 4850. The larger monitor will help you with photoshop though as i definitely prefer working on my desktop over my laptop.
if you have any questions as to why i picked what i picked feel free to ask, you cant learn without asking and you arent going to offend me. Also dont get that build just yet, im pretty sure its as good as you can get but its always good to get a second opinion.