Is my screen 60hzz? please help (Wanna play SSBB =[[)

Hey guys, well, I don't know if my tv can handle 60hzz or not.. I went into the menu system of the wii and selected 60hhz instead of 50hhz and played a game (Dragon Quest Swords) and it worked fine, but I thought maybe it was displaying the game in 50hhz maybe? the problem is, I don't have the manual anymore.. and the only info on the tv I have is it's name (schneider).. I hope that because I can play DQS in 60hhz I can play SSBB (with freeloader) too!

Please answer.. I'm thinking of buying SSBB & FL on friday.. but don't know (the shop that sells them has a no return policy and I won't buy them anywhere so please don't say anywhere, thanks ^_^)