Webuser Forums: Help please!

Hello folks.
I was having some trouble with acronis true image home the other day so i uninstalled it. When setting the secure zone i partitioned the D drive for the startup manager which had overwritten the MBR. I stupidly deleted the restore partition thinking the pc would revert to its original setting...very stupid i know, i've been calling myself every name under the sun after i'd realised what i'd done!

Anyway, now i can't do a system restore or a microsoft system restore. I've reloaded acronis and can't set up a secure zone or the startup manager.
I get the following msg on a blue screen when i try to do a system restore:

STOP: c0000218{Registry File Failure}
The registry cannot load the hive(file):
\SystemRoot\System32\Config\Security
or its log or alternate
It is corrupt, absent, or not writable.

Is there anyway i can undo the damage? I have a couple of programs who's serial numbers have been lost during moves etc. and i don't want to lose these.
Please forgive my ignorance.
Damian

P.S. emachines 5250, XP SP2