Windows ignores linux partitions.
You will need to delete the linux partitions, create new partitions for windows and then format them.
If XP's diskmanager will not let you delete the partitions then either stick the drive back in the linux box and use fdisk or cfdisk or find a copy of Windows 98 fdisk or download a 98 boot floppy utility disk from www.bootdisk.com.
When running DOS fdisk select delete non-DOS partitions from the menu.
Once the partitions are deleted you can use XP's diskmanager to create new windows partitions and format them as desired.