hyena_of_leisure
Tralk
For the record, since you are new, D&D Wiki is 99% Homebrew, 1% actual useful materials.
So, if you intended to use a homebrew class as opposed to a real one, by all means.
Oh.. I feel like an idiot now.. okay, thank you.. in that case I guess I'll just scrap this then. Is there a full list available of all 'real' classes for 3.5 and 4E?
This site has a list of all the core classes and psionic classes for 3.5. Don't bother looking for 4e classes--it's not compatible with 3.5 at all. And yeah, as a general rule, most of what you find on dandwiki is homebrew of suspect quality, at best. I've found a couple of cool things on there that seem reasonable, but they're few and far between.
You may be able to talk to your DM about letting you use
Pathfinder's gunslinger class instead. Run it by him if you're still interested in the idea.
As a word of advice, though, I would scrap the dual-wielding idea in this case. Being able to dual-wield effectively requires a heavy feat investment, and unless you're playing a fighter, ranger, or rogue, you just can't afford it. That said, you may be able to use the whip-dagger (as Tralk mentioned, it's a non-useless version of the whip, from the Arms and Equipment Guide) as a backup weapon.
il-Lashtavar, is Secrets of Sarlona a setting-specific book? I've never heard of it, personally--if it's a more obscure supplement, that could explain why he's having trouble finding it.