Check out this advice from Dan Harrington's new book (you can read the whole excerpt @ http://www.twoplustw...ngton-v1.html):
"Letís look at the issues first. What should you take into consideration when youíre reraised? 1. Your hand. Did you come into the pot with solid values, or were you making a call or raise with a marginal hand for your position?[This is clearly a case of the latter, so we put one point in the fold category.]2. How many players were in the pot? A raise from a player facing only one opponent in the pot is usually less significant than one from a player who has already seen two or more players enter the pot. There are at least four different situations, which must be judged differently. (1) You call the blind. A raise behind you indicates some strength. (2) You raise. A reraise behind you indicates more strength. (3) There is a call in front of you, and then you raise. A reraise behind you indicates even more strength. (4) There is a raise in front of you, and you reraise. Now a reraise behind you represents a real powerhouse. [This is case 2, representing a good amount of strength. 2 points for folding.]3. How many players are yet to act? A reraise from the button or one of the blinds may just be an attempt to defend the blind or foil a steal. A reraise from a player in early or middle position, who faces the possibility of several players yet to act behind him, indicates more strength. [This would generally point us in the direction of calling, but since the SB player went all in, we assume this is not an attempt to foil a steal. One more point for folding.]4. Will you have position on the reraiser after the flop? If the reraiser is one of the blinds, you will act behind him after the flop. You can call with weaker hands than if the reraiser will act after you. [Positional advantage eliminated. 4 points for folding.]5. What are the pot odds? Be sure to calculate the pot odds before making your move. You should be much more willing to enter a pot with good odds rather than bad odds. [The pot is laying us slightly better than 2:1. Not great, but not bad. If we think there's a 32% shot we have the best hand here, a call is correct. And as Sklansky readers know, even 32 off-suit is about a 33% shot against a random hand. However, we're not up against a random hand. We're up against an all-in hand. We'll mark this in the neutral column.]6. How aggressive is the reraiser? A reraise from a conservative player has to be given somewhat more respect than a reraise from a player who plays many pots. But donít press this analysis too far. Many aggressive and super-aggressive players like to steal unopened pots, but their reraises may be quite sound and normal. Until you have evidence that a player will try to reraise with minimal or weak hands, donít be quick to assume thatís the case. [Another point for folding.]7. Whatís the situation in the tournament? If itís early in the tournament, and both you and the reraiser have plenty of chips in relation to the blinds and antes, you want to play more conservatively. You should be much less inclined to get involved in a situation that could knock you out of the tournament quickly. As your stack shrinks and the blinds pressure you more, your willingness to make a big move increases. Those are a lot of issues to weigh. .."[One last point for folding.]So that's 6 points for folding and 1 point in the neutral column. Easy lay down.