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I picked up an old 93 honda accord ex and the timing belt was broken. I was wondering if this engine is an interference one because then I'll have to think about getting new valves. Anyone know?

 
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what is a interference engine?

 
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Yep. Look on the divers side corner of your dash (right at the windshield). If there are 17 digits (numbers and letters) then it is.

 
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All Honda's, with the sole exception of the 3.5l Passport, are interference engines. If the timing belt is broken then there is valve damage. Now, if the timing belt failed at a low speed, or at idle, there is a small chance that the valve damage may be minimal enough that you can replace the belt and drive the vehicle. The belt is fairly easy (as far as timing belts go) to replace, and all you need to put back on the front of the engine to test start it after the belt replacement is the crankshaft pulley, then you can tell if you need a valve job/head replacement. Plus the belt is fairly cheap if you do it yourself, somewhere around 15-30 bucks.