DirecTV policy regarding WHDVR is that you must, at the very least have an HDDVR and an HD receiver in order to have WHDVR. in the OP's case, he fails to meet this criteria. But then there is one caveat, usually if you get a Genie, it comes with WHDVR service as default.
With that being said, I am not sure that the R22 can be used in WHDVR without meeting DirecT's criteria to get the service.
Here’s to the crazy ones.
The misfits. The rebels.
The the troublemakers.
The round pegs in the square holes.
The ones who see things different.
They’re not fond of rules, and they have no respect for the status quo.