How to configure HTC Desire for 3g connectivity in Peru? How can I configure an unlocked HTC Desire for 3g connectivity in Peru?

I have managed to add an APN so that I have EDGE but I would like to use Claro's 3.5g.

I also have an iPhone with the same kind of dataplan that has 3g pre-configured so I am hoping that it is possible.

I realize that this is a very specific question but I can´t get any worse help than at the Claro office...
In order to connect to a given 3G/3.5G network, your phone must support the correct band.

Based on the sparse information I was able to gather, it seems that Claro is using bands II and V (1900 and 850)

It seems that there are at least three different models of the HTC Desire, of which the HTC Triumph / Desire US A8182 and HTC Desire Telstra A8183 support bands II and V.  The third model, HTC Desire A8181 supports bands I and VIII instead.

If your phone has the correct APN, supports the correct bands, and 3G is not disabled it should just work.