1) according to Daniel's what's new
[Link: remotecentral.com]802.11b Network Extender (available 1st quarter 2003) offers IR routing, power sensing and RS232 control
that might be what you are looking for
2) also like you said, you might be able to use your PC for the job. Don't know about the iPronto-PC part (can you send commands, or will you need to create a web site) but there are PC/IR devices