well, unplug the surge protector, and plug (preferably 1 at a time to make sure) the comp/ monitor into the wall outlet, if u still get a shock from either one you'll have to buy a new PSU or Monitor, if it doesnt you have your problem (im talking bout the surge protector of course)
If it is the sure protector, take it back to the store or if its out of the 30-90 day warrenty, send it back to the company that makes it.
Also check your MoBo o see if any caps have blow, the extra unwanted electricty can do damage to the rest of your comp,
Also if it is the surge protector and any of your hardware is broken (possibly because of the extra electricty) send the company a letter/email and they'll probably replace it.