Should i accept either of these trades in my fantasy football league?

I wouldn't do either trade. First of all, your team is STACKED. You have the #1 and 2 rushers in the league. They don't share carries. Why would you trade for marion barber? YUCK! I understand you want to upgrade your D. I would try to trade hester, crabtree or C. johnson to get a better D. 2nd deal is just crap. Forte can't get it going and Dallas D isn't that good. Bottom line.....Don't do it!