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On what terms should i lay out the tech support? I dont mind going over there and looking at the computer whenever it's a little messed up but I dont want to have to replace parts using my own money... >>
That's why you let them know what the warranty is for each of the components. Let them know it's their dollar when they expire. I usually will give them a general idea of the failure rate for most components.
For example, CD-ROMs have the highest... CPU, RAM etc, usually fail quickly or work forever...
Then all you have to do is choose a time period that you are willing to supply free labor.
I have built about 8 machines for people in the past year and I have not had to supply any support aside from being asked to install additional hardware. Oh, and I did get one panic stricken call over a 'Non-system disk or disk error' boot message.
Good luck.