Hi, I have a 30 gig Maxtor HD and before I got it, it was seperated into two drives. Drive C: was 18.62 gigs and was formatted FAT32. It also has my boot on it. The drive D was 10 gigs and I deleted it thinking it would then turn drive C: into the 28-30 gig drive, but to my dismay it turned into unallocated space. I have Windows XP Pro on the computer right now but my hope was to erase the entire hard drive (and to have only one drive) and start a new computer (new mobo and case with 2.4 gig P4) with it 'brand new'. I would be installing XP Home on it then. Is this still possible?

Sure. I assume that you know how to access the disk utility tool in the XP system disk, since you figured out what happened to the partition you deleted. Just boot with the XP system disk, go back into that screen, and remove ALL partitions on your disk. Now create one large partition, format it in NTFS, and the XP installation will begin automatically soon as the formatting is done. If I may make a respectful suggestion: now is a good time to create a library partition for file storage. It's quick&easy to do, and if you save all your work to this partition your data is safe if your main partition gets a virus, crashes & corrupts system files, etc. Or, if you want, you can dual-boot by installing XP on this partition, and then if your main crashes unrecoverably, just boot into D:XP and there are all your data files, nice & safe!

Thanks for the help, I will do that at lunch. The system disk mean CD or boot disk?

A System Disk is Always the CD Operating System; a boot disk does only what it says: boots you into DOS or utilities that help you configure your and set up your harddrives, but you can't install or configure your Operating System using only a boot disk. Possible exception is Windows 98 or Windows ME because they use DOS, but that is almost extinct now.