NBA league help!

Hi all -

I don't know much about the NBA, but play annually in a fantasy league with some former co-workers, and I could use some help.  

First up, there are still 3 potential openings... they aim for 20 teams, and we're at 17.  If you'd be an active owner (i.e. not ignoring the team for months at a time like I have done sometimes), put a reply here, and I'll send you details.  NBA knowledge is all across the board in this league, and it's free, so if you're looking to get started, this could be fun.  And the top few owners are quite savvy, so it could be a challenge for knowledgable NBA fans.

Next, I have a rotopass.com subscription, and they have a tool to allow a user to enter league settings and then they shoot out their rankings.  Have other people used this tool?  Do the RW rankings have biases that I should know about?  I'm not looking to pour a lot of time into this league, but if they "usually under-value SG" or something like that, it would be nice to know.  Do people know of other free ranking services that they prefer?

Lastly, any tips?  We're doing the draft "live" this year, since last year, Yahoo drafted really crazy... I got 6 guys rated at Center in my first 10 rounds, I think, and my best PG was some injured backup.  Here are the stats we use: FGA (-1), FGM (1), FTA (-1), FTM (1), PTS (1), REB (1), AST (1), ST (1), BLK (1), TO (-1)

Thanks!