My ARM is resetting in Sept 2010. I am at 5.25% now. Should I let it become variable at that time or should I refinance now?
Yes, with where the market is and rates are at it would be a good idea for you to look into this as rates can go up at anytime and it wouldn't be worth the risk compared to where rates are at in today's market... Hope this helps!

Are VA loan rates different than regular? If so, are they lower or higher?
Hello, It all depends on credit scores usually. Government Loans these days are lower than Fannie or Freddie rates. Are you looking to buy or refi?