So my Powermac G3 is dead. I went to Compusa and was able to order a previous gen Mac Mini for $463 after taxes (how I got charged tax on an online order is beyond me) Anyhow, I am beginning to second think my choice. It only comes with 256mb of RAM. As a student, I could get a new Mac Mini for $479 and it comes with 512mb of RAM. Here is my question, does Apple charge Tax on online orders like Compusa does? Also, will an Apple store install RAM for me without voiding my Applecare? I may still have time to cancel my order if it is the right thing to do.