I have an emachine T5026 that I am either looking to upgrade or replace. If I were to upgrade it I need a new video card and at least 1 GB of memory. I have had this computer for nearly three years and also know that the psu should and needs to be replaced. I have built an older computer from scratch before so this will be easy to replace these things. Or should I buy a new computer? I would like a good gaming computer. If need be I could scrap parts from the emachine. Either way it needs to be affordable.