Removed a child site by mistake using PREINST /DELSITE command

Hi, while proceeding to clean up the deletion of a child site in SCCM 2007 using "Preinst /Delsite xyz" command, I erroneously typed the wrong site code. This action resulted in a the wrong child site to be removed from the Admin console, although the SCCM files are OK on the site server.

Is there a way to recover the child site "xyz" in the database? 

Thanks,

Silvio