|1) when your boot screen appears enter the BIOS setup. |
2) then select booting section of it and then disable hard drive as a booting device.
3) select cd or dvd rom as primary booting device
4)put your xp cd in the cd drive then
5) restart your computer.
6) start your installation and format your HDD in proper file system.
this should work as per may knowledge
do reply if this works.