> It's (having an ISP filter) really reduced my level of spam irritation and
kept my computer from
> being infected with the Blaster worm and Sobig viruses.

I retract the statement about the ISP filter catching Blaster. I'm not sure
the filter catches "worms." (Don't ask me the difference between a worm and
virus; I'm clueless.) I had fortuitously updated Windows a week or so
before Blaster hit. Entirely a stroke of luck on my part, since I hardly
ever bother to do the updates. But I recommend them.

Kelly