Hi Scotty,
I have DSL and could
never go back to 56K. The speed and convience of not having to dial-up is great. It is only more prone to hacking if you have a static IP, because it can be used for trojans and such. But, if you have a dynamic IP (most DSL is) then it's the same as dial-up, the IP changes everytime you connect. Like Jenni mentioned, I would use
ZoneAlarm for the extra security. So no, you won't need to go with Linux for security, you'll be fine with Windows and common sense. The
best source for DSL information is at
DSL Reports. Just look around the site and you'll find more than you need. Hope that helps.