PHP Problem

hi i just add the php guestbook on my site...and while setting up database....i install install.php and then give the old database name.and the same user and password...but now my old database has all fields of guestbook..but my old fields are gone...and that was very important database which i think i lost...can u help me to recover the old database... thank nabeel. _________________________________________________________________ MSN 8 helps eliminate e-mail viruses. Get 2 months FREE*. http://join.msn.com/?page=features/virus