You need a Mortgage Broker.
see programs here: http://www.trulia.com/blog/steve_31/2012/05/mortgage_brokers
1) Determining the area you want to be in
2) Dealing with an agent that has company's they can refer you to for international mortgages
3) Reviewing your visa options
4) Converting your currency into US dollars so there is no sudden shock at the closing table due to currency exchange rates changing.
If you want to learn more go to http://www.castledreamrealestate.com and look at the various items under the Intenational Buyer tab.
Yes there are loan opportunities available. I would suggest that you start by 1st choosing the area that you really want to live, Tampbay or Orlando. Then interviewing a few agents and find out which one can put you in contact with a good lender that is going to be able secure the best loan option out there for you. I can put you in touch with a great mortgage broker who will work hard for you. Best of luck.
Real Estate Consultant
Keller Williams Gulfside Realty