Odds question

[RedeemerKing]

This situation presented itself to me when I was playing 2-4 on Partypoker. What are the odds when you have 3 to a straight in succession and 3 to a flush after the flop. What are the odds of making either the straight or the flush. Forget about overcards and runner runner two pair or 3 of a kind as possible ways to win. Sometimes on Party you will be getting over 20-1 on your money after the flop and that seems like enough to call but would like to know exact odds.

Thx