When I try and start up my computer it says Verifying DMI Pool Data... then it says NTLDR is missing, press any key to restart... What does that mean and what do I do???

Have a look here http://www.webopedia.com/TERM/N/NTLDR.html

NTLDR is one of the files that's needed to bootup XP. It's a hidden system file that resides in ur C root directory. It can become corrupted after a bad shutdown and is a common prob. 1) Boot the PC from the XP disk (u may need to set the cdrom as the 1st boot device in the bios) 2) Select 'Repair Console' option (press 'R' when asked) 3) Type: copy x:\i386\ntldr C: (where 'x' is ur cdrom drive letter) The file will be uncompressed via Repair Consoles's 'copy' command and copied to ur C drive. If u get a warning that the file will be overwritten, select 'Yes'. Good Luck

It says when i try and do that that Setup did not find any hard disk drives installed on my computer... I have 2 80 Gigabyte Maxtor Harddrives Raided on my system...

Ok I disconnected my Raid card and just hooked up one of my Maxtor 80 gig drives directly to the motherboard and booted the computer. I ran the Repair program through the Windows XP Pro CD and then typed the line you said. It says "Access is denied." What do I do? Also why won't it detect my 2 hardrives when they're hooked through the Raid card? Everything was running fine a couple of days ago when it just did this out of the blue???