I don't use regular expressions much at all. And when I do, many times they are a bit proprietary to the language. Especially in windows arena. Recently I have been delving deeper into squid and squidguard, attempting to fine tune my blocking/filtering. However, I haven't been having much luck. Since I don't use regex daily, or for that matter much of any Unix based programming/computing, it is an exercise in frustration. Is there anyone here who has a good handle on regex that might learn me a thing or two? Sul.