PDAs Converting Mobile Phones into WAP Devices?

mvw asks: "I spotted this organizer by Siemens that together with my infrared interface equipped Nokia mobile might give me WAP browsing. Anyone has experiences with this? If this is programmable (under Linux, FreeBSD) as well, this is more interesting than a palm pilot to me, due to its (supposedly) better integration to mobile phone standards here in Europe." Has anyone played around with other PDA/phone combinations in order to do this? Thoughts?