allright, so here's the deal. i got a new imac, and decided to install windows 7 in another partition so i could play games. bad idea for me. something went wrong somewhere, and my mac osx partition ended up being corrupt or something while the newly installed windows one was fine. not sure how it happened, lol. half the time when i would pick my mac osx partition, it would work, and half the time, it wouldn't even start. eventually it irritated me so much that I backed up everything, and then i deleted the entire partition using my friends mac osx repair cd... but i wasn't able to install mac osx because the cd was the one that came with HIS mac unfortionately... lol so, i ended up ordering a copy of my repair cds from apple (i had lost mine), and now that they are here, i tried firing them up. holding down Option brings up my Windows partition, and the repair cd, but every time I click the repair cd, it just boots into windows instead. I've tried resetting the PRAM, but not the other thing (where you unplug your mac for a bit), i think i'll try that next, although I don't think it will make a difference. was deleting/formatting my non-working macosx partition with my friends repair disc a bad idea? i hope to god that's not the reason my own repair disc won't properly boot now.... what should I do? I've also tried holding down C when I boot, which just brings me to a screen to choose an OS to start from (with of course Windows 7 being the only one). any ideas?