BB flops two pair and faces aggression

[Kyriefurro]

Just starting my second orbit at the table, and I've never seen villain before.

Stacks: Villain and I each have about $100

Hero is BB w/ 7 [img]/images/graemlins/club.gif[/img], 4 [img]/images/graemlins/spade.gif[/img]

Preflop <font color="blue"> (3 players) </font>: Button folds, SB completes, Hero checks

($2) Flop <font color="blue"> (2 players) </font>: 7 [img]/images/graemlins/diamond.gif[/img], 3 [img]/images/graemlins/club.gif[/img], 4 [img]/images/graemlins/heart.gif[/img]
SB bets $1, Hero <font color="red"> raises to $3 </font>, SB <font color="red"> raises to $9 </font> , Hero <font color="red"> raises to $23 </font>, SB <font color="red"> raises to $100 (all-in) </font> , Hero......?

Looking at it this morning I think that fourth raise was pretty stupid. At that point I should have either pushed or folded.

Aside from that, should I call or fold to villain's push?

[Robfish]

I think fold here. He just seems to be showing alot of strength that i would imagine he has a set or a str8 especially after he re raised the 2nd time.