If the *only* (or primary) reason you're buying an iPaq is for a remote control, don't spend money on a new one.
Go to ebay and buy a used 3635 and a Cf sleeve for under $200-. Then go get PDAWin for $15 and the Electric Dog CF IR extender card for another $25-.
PTVBrowser makes a good 'companion' in an iPaq remote control.
Software info can be found on
www.handango.comAlso look at netremote.org for something a bit more 'sophisticated' (and complex) that lets your iPaq talk to a home theater PC and components.