Hey HotShotEd, I live in Bangkok.
I don't know of any popular racket outlets here but if you go to Siam Pa-ra-gon, but I can assure you that you will not be disappointed when buying rackets because as far as I know, Pa-ra-gon has the biggest selection of rackets. They even have Tecnifibre rackets... You cannot find Tecnifibre rackets anywhere else apart from Pa-ra-gon. I think. Oh, but the downside of racket-buying in Thailand is that all of the new rackets, like the Wilson nBlade, nPro Open and the Yonex RDS 001's and 003's aren't here yet. Not even the sponsored players of which I know of have them. You should also visit Pa-ra-gon for string matters too. They have a large choice there ranging from Wilson and Babolat to Gosen and Tecnifibre.