Thank you for your replies, really appreciate it.
I have to confess something. My copy of windows 2000 was downloaded from the Internet from a friend of mine, so its not perfectly legal, but im not sure that's the case here.
Um yes, i DID reformat C: to freshly install my windows 2000, but for some weird reason the w2k cd isnt bootable (is the real thing supposed to be bootable?)
So i used the windows ME startup floppy to use my cdrom drive to access the w2k CD, but i couldnt run setup.exe from DOS, so i tried the i386 folder and tried winnt.exe and winnt32.exe. neither worked. i tried winnt.exe and it looked like it was about to start the real setup, but then an error message came up, i cant remember exactly, but it went something like this:
"setup cannot install windows boot loader. please make sure that the hard drive is not damaged or has not been formatted. setup cannot continue. press ENTER to exit."
So then i re-installed winME (had no choice) and then started the w2k setup from inside windows.
Thanks, everything is under control right now.