I would imagine she has 480 megs of RAM because she actually has 512 megs but her video is integrated and therefore her motherboard shares 32 megs with video.
When it won't work unplug all other USB devices and see what happens.
If you have an hp printer that takes the memory of a digital camera it would work. You can get that at best buy I think is more than 300 dollars. It works on mine.