Problem with windows partition

[William Lacy <billy@swt.edu>]

I installed debian on a desktop computer and for some reason although I 
chose "make a boot floppy" the install script wrote "grub" the the mbr 
of /dev/hda.  I was stuck in a place with nothing but some debian cds, 
but I digress.  I tried to load lilo but I messed up and typed 
boot=/dev/hda1 instead of /dev/hda.  So apparently I lost my partition 
table on /dev/hda1 which had several extended partitions with win xp and 
God only knows what all.

Any help on how to get my partition table back for /dev/hda1 would be 
greatly appreciated.