A Texas Hold 'Em game with two jokers in the deck

[mrh86]

This is a simple question based on odds, but I have no idea how to figure the answer out. Suppose you are playing in a no limit Texas Hold 'Em game with 54 cards. The only difference between a normal Hold 'Em game and this one is that the two jokers are left in the deck, and they're wild. Now suppose two people are playing this game heads-up. One is dealt:

A [img]/images/graemlins/diamond.gif[/img] A [img]/images/graemlins/heart.gif[/img]

The other is dealt:

A joker and the 7 [img]/images/graemlins/diamond.gif[/img] or 7 [img]/images/graemlins/heart.gif[/img]

What is the percentage for the aces to hold up preflop?