Installing XP, help

I am attempting to install XP on my friends computer. He currently has Windows ME. I put in the CD, clicked install XP, it started the installation proceedure and then restarted. After the restart it went into this screen where it has the partitions. I tried deleting the Windows Me partition but it wont let me. It WILL let me install XP on the same partition as the Windows Me, but I dont want that. I want to have XP only..Any help?