CoD in Bangkok

[tools4fools]

Had no luck in finding a genuine copy of CoD here in Bangkok so far - and only one who sells a illegal copy so far.

Now I'm not interested in the illegal copy as I want to support the developers team.
Download is no option, net is too slow, just took me 4 attempts until I was able to download my new Avira, and the last successful atempt took about 50min for the 80MB.

So question:
- where can I get a genuine version of CoD here in Bangkok (or maybe KL or Singapore, will go on a trip soon anyway)
or
- would it be possible to buy the illegal CD copy to install the game on the PC, then buy the real thing online and use the licence to register it online?

Thanks for any help!