Hey everyone,
So i had everything up and running just fine... i was dual boot windows xp and snow leopard 10.6.2. followed all the right guides (mostly mechdrews) and was happy.
THEN i just had to try and adjust the partitions to give more space to osx and only about 20 gigs to xp.
I made a backup of the windows xp partition and deleted it... then i went to adjust the osx partition in disk util to make it bigger. I then restarted to see if it took effect and now every time i restart i get this error.

(sorry if it is a bit blurry)
I would like to just start from scratch, reinstall snow leopard and partition the sizes right the first time.
Thank you so much!
EDIT: Running Dell mini 10v, 160 gb HDD, 1 gig ram, no blue tooth (if that helps)