no drive letter

i have a gateway desktop with win xp home. I've been have trouble with this computer shutting down and rebooting. I'll post another question later about this.
Anyway I finally reinstalled windows after many stop messages, but when I went to look for my second hard drive in "my computer" it wasn't listed . it show up in system information, and it shows on computer manage, although it doesn't show a drive letter for it.
How can I assign a drive letter to it so I can use it again?

 

Have you installed the latest Service Pack?

If not, do so plus the subsequent updates.

 

I used the cd's that came with the computer, one was the operating system with xp sp1, and the otheer was the drivers. Then I had sp2 installed. Like I said, it shows the main hard drive and it also shows a external drive and it shows the drive in question. But where it says volume (where the drive letter should be,) it's blued out.

 

I reinstalled disk magic 8. and it showed the partition I'm having troubles with was changed to a 44 Hex Goback partion. I don't know how that was done but I reinstalled GoBack and the partion was given a drive letter and changed back to a ntfs partition. Everything ain't alright with the computer but at least I can see my extra hard drive.
I'll post later about the other problems. Thanks for the help