Leaving Dell or how to build a PC living in Mexico

Hi,
You know, for three years, I have had a Dell computer and I do not have any problems with my equipment. However, I understand your motives to hate Dell. Nevertheless, I live in Mexico and Dell is the only company who offers the newest PC´s to Mexico. Besides Dell allows to personally configure your PC. The others companys (for example HP and Compaq) offers PC´s a little bit older at very hig prices and you could not buy online or configure your equipment¡ By the way, Dell´s prices are high too.
In Mexico, it is very dificult to get good quality hardware. Most of the people who build PC´s in Mexico are thieves or worst of all they are a bunch of ignorants. They claim to be reputable, but they do not have the minimum knowledges.
I would want to know if it is possible to build a PC living in Mexico¡ You know, it is a sort of challenge for me, because I live in a third world country but I do not consider myself as a dumb.
Could you give some links to trustworthie´s companys who offers hardware to international coustumers like me? Could you recommend me some bibliograhy?
Regards,

Marco Antonio Vazquez.

PS: Maybe, you´d better send me a link to a trustworthy company who could sell a good armed PC to Mexico¡