Two Handed Fighting w/Bastard Swords

[bobsobs]

Sorry guys, I meant fighting with two weapons.

That's quite an outpouring of good advice. Thank you! Let me ask a few follow up questions...

Bastard sword: 1-10, 19-20 x2
Khopesh: 1-8, 19-20 x3

If my intention is to be a quick and nimble fighter using two weapons, my guess would be that in combat with many monsters I'd better serve the group by attack multiple targets rather than focusing on the boss monster. That said, wouldn't it be better to consistently do more damage rather than to focus on doing an extra damage just 10% of the time? I really don't know. I guess it depends on how many hits it takes to kill your "average" monster? Using feats/enhancements to increase your chance of critical damage also plays a big roll, I suspect.

I like the high dexterity because I like the light armor and quickness and freedom from ac checks, but I'm not sure what use Weapon Finesse is because the weapons that qualify don't seem very interesting to me. Neither the Bsword or Khop qualifies for the "weapon finesse" feat, right?

The oversized weapon fighting feat is pretty much a must to get, right? There wouldn't be much argument for trying to play without it, right?

I like the idea of playing a character who's very quick. Tumble, jump, spring, etc. For that reason, rogue seems a good fit. I like all the other stuff rogues do too and I like playing that role in a larger party, but I realize I'll need to make some choices. It doesn't seem like I can get strong enough just with rogue to use two weapons effectively especially at higher levels. Is there a multi-class arugement to be made for starting as a fighter (or maybe ranger) but then quickly switching to rogue and staying with that until the end?

Let me add that I prefer slashing weapons, mostly because I just do. Likewise, I'd prefer to play elf, drow, or human. Also, I really haven't played enough to understand the negative effects of multi-classing. For example, what would I be giving being a multi-class rogue instead of a pure rogue? Finally, It was mentioned that Rangers start with Two Weapon Fighting as a given, but this doesn't appear to be correct. I'm not interested in primarily using ranged weapons or using magic, so it seems fighter is a better choice for me than ranger if I'm going to multi-class.