How to: XP repair installation on partioned HD?

I've searched the "How To's" to do this. However, all of them (example) are like this:

http://pcsupport.about.com/od/operatingsystems/ss/instxprepair1_5.htm

I get to step 5 (in the above example), but the next screen/page is different than mine. What I get is a screen that shows 3 partitions on my HD:

-: Partition 1 [FAT] 71 MB (62 free)
C: Partition 2 [NTFS] 71336 MB (25802 free)
E: Partition 3 [FATS32] 4910 MB (452 free)

Might sound stupid, but which one is my XP os on, and/or which one should I select? I can tell you that I went as far as the next step by selecting drive C, (as that's the one I presume I'm attempting to repair). But again,....even the next screen I get is different from the screen on STEP 7 of the example above.

Any help is appreciated. Thank you.

Just a note.......I want to do a repair of XP, not a clean/new install. I see that there's an option at the begining to press "R" to repair, but all of the instuctional websites I saw said NOT to choose the "R" option.