Find a local agent willing to take ALOT of pictures and who knows how to use the internet!!!! I have been doing a lot of business lately with Canadians, and some days go through multiple packs of batteries with my digital camera. I agree with Ilona, you are really going to need to get financed by a US lender, unless your lender is financing you against another property that you already own, in which case you would essentially be paying cash here in the US.
Why a condo in Mesa? Are you moving back to the area or will this be a second home? What price range? What features of the home and neighborhood amenities are important to you?
Please let me know if you would like some assistance with your long distance home purchase.....I take great pictures!