Am trying to figure out this "unmountable boot volume" thing on my PC.?

Your Computer Seems To Be Starting Up In "SafeMode"Why?Who Knows.But I Can Tell You How To Get To The C Prompt.Put In Your Reinstallation Disc.Restart Your Computer.Wait For the Prompt PRESS ANY KEY TO BOOT FROM CD\Or SETUP IS INSPECTING YOUR HARDWARE.After The Drivers Load Choose The Option "To REPAIR USING THE RECOVERY CONSOLE"What system Do You Want To Log On To?Press (1),And ForThe Pword Just Press Enter(Unless You Have A Custom Pword).You Should Be At The C Prompt Now.The Good News Is That You Have The Reinstallation CD.Worst Case Senerio is Using It To Reinstall.Most People Dont Even Have It.