Re: Linux distro. Wich one??
My advice would be to not listen to anyone's advice :)
Everyone is going to be biased to the disto that they use.
Just try both of them and use the one that you prefer.
Seeing as you have a dial up connection buying both slackware and debian would save you quite a bit of time. There are plenty of web sites that sells them for next to nothing to promote linux usage.
You will forever be trying out new/other distro's if you take everyone's one advice that distro X is better than distro Y.