JJ i raise from about anywhere - if I'm in the blinds to a raised pot I'll maybe just call. Depends on the raiser though - i'f he's a loose player, I might repop him with the JJ but I'm very willing to throw it away, especially post flop if overcards hit. With a tight player I want to see the flop.

TT I probably raise from late position but again I'm very willing to throw it away if overcards hit and there's action in front of me.

At NL so much is about feel though that it's hard to come up with any hard and fast rules. Both of those hands are very dangerous, IMO, because they look very pretty but they're very easy to have cracked. In position, play fast, but with caution. Most important though is to try and determine what your opponents are playing with and base your decisions on that.