Man, I fail to take you seriously, for a few reasons...
a) their offices are located in the US, and only hire citizens, so its hard for me to believe that you talked to a foriegner
b) If you informed them that you had opened the machine, that voids the warranty so yes, it would have expired
c) And they do not sell the parts, they are not radioshack, and do not sell individual parts for the machines, and besides...
If you got the Red Rings of Death its the chipset, it has nothing to do with the drive. And no company sells individual chips. If it is the RRoD, there is a small thing you can try that may fix it, at least for a little bit. Wrap the machine in a towel, with nothing but the power supply connected to it, that also means no game in the machine, and let it run for 20 minutes then see if it works. You see, the shortsidedness of M$ in thier trying to make a nice lookin machine there is not enough room for the chipset to breath and the soddering that hold sit to the board will release, so if you run the machine in the towel it will heat up the soddering to hold onto the board again. After you let it run just let it sit out of the towel for about 10 minutes then try it, good luck.
Dazmi
It seems like you got a defectve one & made it worse.
You should've took it bak & traded it for a working Xbox
New-Milkman
I'm pretty sure all I can do is sell a defective 360, then buy a new one. I can't send it in for a new one.
But I could have swore that I could fix it, there was no 3 red rings, just those damn screws DDDDD:::::<<<,<<