Your problem is not the 60Hz mode, you have to use a VGA-Box! (Blaze!)
Search the net for a Onlineshop who sells to Slovenia, too.

The best thing you can do is to buy a TV!
Warning: Not all TV's supports 60Hz! Look in the instructions before buying one.

Note: Virtua Tennis is the best sports game on DC! (The PAL version has an 50/60Hz selector!)