I have been trying to install a new version of XP on my computer mainly because I can't handle 64 bit and it's refusal to be compatible with my wireless card. First of all, I do not have a registered version of the 64 bit due to no internet connection which didn't allow me to register my copy and in turn locking my computer unil I do so. My friend gve me a copy of XP pro SP3 and I want to install it, but I have a few issues. How do I delete the old OS? How do I install the new one? I have been having some problems with opening the bios and what not, I am using ASUS P5N73-AM mobo. I really need help with this, because it is limiting my use of the computer, a brand new computer which I have not been able to consistently use since the time I bought it.