Looks fishy. Proudly displaying a CDR on your frontpage doesn't inspire my confidence in their legality...

Prices are also too low to be legit, below even OEM and educational prices (and those are available only under strict conditions which these guys don't seem to enforce).
And of course in his FAQ he mentions a lot of incorrect things about downloading but nowhere mentions it's illegal...
His method for installing Windows XP is invalid for legal versions which boot from CD, his software does not ship in the original packaging and does not have manuals.
I guess you got CDRs?
He will deliver on CD or DVD on order thus he burns his own which reputable dealers NEVER do as they get complete and legal packages from the manufacturer.
He says you shouldn't register the stuff you buy from him with the manufacturer (guess why, the manufacturer will then know you have a pirated version...).

Sorry, but you got ripped off by someone selling pirated software. I suggest you contact Scotland Yard's computer crimes division.