Well, I went the Expander route instead of shelling out big $$ for the newest Linksys SRX setup.
I'd tried the Linksys Expander previously, but it didn't work with the weirdo Linksys WRK54G 802.11g router I had at the time.
Now that I have the more mainstream Linksys WRT54G router, and after some fits and starts in getting it running (it helps to have a hard copy of the manual around for reference), the Expander works pretty well!
Slim, I knew you'd be gratified to hear all this.