Originally Posted by dlh6213
That doesn't sound right to me, where did you get that information? You should be able to add RAM without affecting setup. 
112Mb is simply a 128Mb module with 16Mb used for onboard graphics. Adding more RAM will NOT mean you can't reinstall the system, the reinstall will work perfectly. 128Mb is not enough to run Windows XP efficiently, and you should definitely add more.