Video card dell dimension 3000

Question

Hey, everybody.
Im planning to buy a new video card for my ; dell dimension 3000,  Intel(R) , Celeron(R) CPU 2.4GHz, 2.00 gb of ram, and I believe power supply is 250 W.
So here is the bunch of questions;
1. Seems like my computer uses a pci type memory cards, my question here is can I use these wide known pci e cards?
2. Second one is I seen that there are different sizes of video cards out there for sale, so how do I figure out which one I should use, I mean is there a maximum number of mb that my computer supports or I could use any size of video card?
..and I think so far I do not have more questions about my video memory card purchase. 
*all help would be appreciated Thanks*

Answer 1

1. you will not be able to use a PCI-E card in the Dimension 3000.
2. Your choices are very limted on PCI videocards and the performance increase is not worth the money that a new card will cost you. You could go with a 512mb PCI card but with the slow celeron processor and and low end power supply. You still will not be able to play of the new games that are out right now.
It's time for a new computer.
**If you like my answer then click the little Star under my username.
**If my response answered your question then click the Solved button. Thanks