Question about a new graphics card

I currently have a Gateway computer "GT5656 series". I'm planning on buying a new graphics card but it seems that I only have a 300 watt power supply. Anyone know if this will work with my computer? I googled it and it said that it only require 300 watts i think. If it doesn't work, can anyone suggest one that is best for a computer with 300 watts? thx ^^

[Depends. First of all, a lot of modern, middle priced Graphics cards require a 350 or higher, and even if they do only need a 300, it all falls on how many drives you have. Do you have multiple Harddrives and DVD drives? If you have two of each, it is very unlikely you will get a middle end graphics that could run on your system]

I only have 1 hard drive, 1 dvd rom.

[Well, if you specify which graphics you are considering, I may be able to tell you if it will require more wattage, and the fact that you are only using one of each drive certainly helps]

[I concur]