I have been offered Edge and Chambers for Chad Johnson and Julius Jones.
I really need help at Rb as JJ is my #2. I have Moss as my #1 Wr. What do you think?

Just looking at my league's numbers (1-10 yds, 6-TD) this trade is as close as you can get. CJ is outscoring Chambers by 40 for the season and Edge is outscoring JJ by 38. Unless you have a hunch about one of the guys you're getting having a big 2nd half, I don't know that you're really upgrading at all.

The upgrade Edge provides may be close to the downgrade that Chambers is, but I'd much rather downgrade at WR, especially with a guy like Johnson, who will have big games here and there, but won't offer consistency. Also, I think Chambers will see a production rise by virtue of being on a better offense now.

I'd like to know more about the two rosters--or at least yours. Or should we assume that you will have to start Chambers week in and week out?

At this time of year, when the weather worsens, WRs seem to slide a bit back and RBs slide forward. So I always jump at the chance to upgrade at RB. GO for it.