Tou should HTML Encode any content in RSS, because if there is <, > or & tag, the RSS feed will be broken.
This is basically an all purpose script that will change any input file into a format that an RSS reader can see. The best results are seen when the input file has each status on individual an line. You could technically combine both the router and computer scripts into one (both are shell scripts), located only on the router, but you can not host a non-html file in the /tmp/www and access it's contents without telnet/ssh. Without additional resources (samba, mmc, ect.) there aren't many other places to access the file. You could also probably setup a script to login via telnet/ssh to gather the settings as needed only utilizing the computer, which maybe an interesting alternative which doesn't rewrite to the flash as much (which technically burns out over time).