Or no? Thought about trying this out for pc since I've alreayd played the 360 version. Just curious if you can be awarded achievement points for the pc version even if you already got them all for 360.

No you cannot. Achievement points aren't even available on PC.

We have an absolutely nice mod called Achieve That!

Well, if you have a steam account(which might be required on install unless you don't have an internet connection), Steam does have achievments for the game. They are in no way related to the xbox 360 ones though. I believe you can only link PSN accounts to Steam, not 360.

How meaningful are steam account achievements? Like I know microsoft achievement points can be hacked, but easily taken care of. What's it like with steam?

they can be hacked very easily. then again: who cares? they are just achievements

You can also get banned for it.
Very very easily.

i wouldn't know

I liked getting achievements on the 360, I had around 50,000 GS before I quit.

Then I moved on and joined the master race. I don't really care about achievements on Steam, but that's just my opinion.