Hi cider,

It is on the same patition as my windows one.
Is that true? or do you mean "drive" rather than "partition"

You could try booting from the Windows CD and running fdisk /mbr That should restore the Windows master boot record and get rid of LILO. Then just delete the stuff you don't want.

Operating systems don't come with an uninstall utility, and you should not load Windows and Linux on the same partition.