Can't really say to much to help, but careful with the Valium..one of the worst habits to kick! There is lots of funny(sad) history about when that drug class was oft perscribed.
One thing that helped me for a while is (trying to word this without sounding like a nut)...well, supposedly it's using sound frequencys
to modify brainwaves..sounds crazy but it woked for we, for a little
while. The weird things you cn turn up typing insomnia into random search systems!(I think if you type brainwave(or insomnia) into download.com it comes up)
Good luck...lots of sleep.
(Oh, by the way my wife can't sleep WITHOUT the TV going FULL BLAST, ALL NIGHT!)