StreamOfTheSky
Adventurer
Hope I'm not to late for this but you just have to look at this:
Specialist Wizard Variants
Specialist Wizard Variants :: d20srd.org
Get Hide as a class skill and at level 5 ad your int to your hide check (+dex of course).
Hiding better then the thief!
Zanticor
Edit: say you wanted a sorcerer. Why? Then this trick does not work. Sorry.
The best option if you haven't begun playing yet might be to just play a gnome illusionist. It gets nice racial alternate levels and UA has a variant that gives you extra class skills, including Hide.
I already mentioned that. UA = Unearthed Arcana = "variant rules" on the d20srd site.