u mean you have got rid of the software that allows u to recover from the hidden rescue system partition which allows you to restore from factory.
There are pieces of software that allows u to read/ copy / recover hidden partitions like this but i cant remember wot they are again. Personally i dont bother with these partitions.
The other option is to completely erase the HD and put your own fresh copy of Xp on without all the junk and use the windows Code that came with the Thing