I also use the Strassburg sock and swear by it. I wore it for only about 2 wks and my pain was essentially gone. I now only wear it at night after having run during the day. I have had heel pain for a number of years and it didn't seem to be getting any better, but I am essentially cured I believe now. It was the best $25 or $30 I have spent. I recently (2/6/99) ran a 20 mile trail run in NC and wore the sock that night and have had no heel pain from the run (now my calves from when they cramped at mile 17 - that's a different story!)
Anyway - give the sock a try. There is a web page for the sock.
Note: I am a 49 yr old male who has run off and on for last 10 yrs.
Good luck to you