How hard is it to put in a new motherboard? I have added CD and DVD writers, memory, modem, new harddrive, and had no problems. Should I consider doing this on my own? Also I bought my computer through Dell the only operating system disc I have is a reinstallation CD. I also have drivers and utilities resource cd,monitor cd,printer cd, modem cd, all of which include drivers and utilities. Is this basically all I will need to reinstall my operating system? I've called around and been told I should change to a different case and go with a cheaper motherboard, but might have problems with power supply wiring in because it is a Dell. I also have a Scott Mueller's upgrading and repairing PCs book it is the 12th edition , came out in 2001. I've called 2 different computer shops and been told that i'm looking at about 300.00 dollars for motherboard, installation, reinstall OS. Doesn't that seem a bit high? Also one shop told me that my reinstallation cd wouln't work that i would have to buy another OS, but they could put a ghost os on my computer and if i had problems with the os I would have to bring in my computer because i wouldn't have a os cd. This ghost os would only cost me $40, but every problem with it i would have to take it to their shop and be charged $40 to fix, at the least. Sounded like a scam to me but i don't know everything. Please advise. I do have another computer at my house that is connected to the internet so i would be able to get online help. I am running windows XP home.