Yahoo Plus league--yeah it's $25 but you'll be paying close to that for the stat-tracker etc anyway ... and you'll be glad to be in a league with SERIOUS players.
League # is 2677 and the Password is experts:
Parameters are as follows. 25 man rosters w/ 2 DL, and 14 teams, so the s**t is deep ... LF, CF, RF to keep you honest out there ...
6x6 scoring, usual categories plus OBP and holds. 1500 IP limit.
The bottom line is, you can't find a roto league better configured to give you a taste of managing the real thing: if you've never tried playing with a real outfield, real relief staff, or real competition, come on and join!