[Solved] Im new to this

The amount of RAM you can add depends on how much your motherboard physically supports. Most motherboards typically have 4 RAM slots, but there are high end ones supporting 6 and low end ones that support only two. Looking up the model of your computer shows that it only has two RAM slots, and can only support up to 1 gigabyte of RAM. Unfortunately you won't be able to add any more.

To answer your question regarding Windows 7 and 64 bit, the specific operating system itself is not relevant, but whether it is 32 bit or 64 bit is what you want to look at. With a 32 bit operating system, you can only utilize around 3 gigs of RAM, whereas a 64 bit operating system can use any amount you can fit into the computer.

Regarding video RAM, that is not something you can actually add to your computer. The only way to get more would be to purchase another video card that has more video RAM..

Information on your computer:
http://support.dell.com/support/ed [...] tm#1101572

More information regarding RAM and 32 bit vs 64 bit usage:
http://www.tomshardware.com/review [...] ,2778.html

I hope I helped you.