i am at my wits ends here. i have my win7 dvd that works on my windows machine. yet my macbook pro (mid 2009 - 15") does not recognise it. the disk is recognised on another windows laptop i have. the mbp recognises many other discs. both burnt and commercial disks. could it be the fact that bootcamp 4.xxxx is recommended for this mbp yet 5.xxx is running? is it possible to downgrade the installed version of bootcamp? i've seen many threads that merely give a download of the drivers.