DSL modem

i rent one as part of the service. can you buy these and not rent?

Yes.

>>1

Yes, it's actually a better idea, because that is less out of pocket per month.

details? more specific than JFGI?

You'll need one of the type/brand that your broadband provider uses.  Also you may have to reprogram it for the particular mode ie bridging or router but instructions can be had online for most.
Around here, they often show up in second-hand type stores (esp Ciscos) for around $5.00US.

$5? Well damn, I had to get one from ebay for like £20. And it keeps crashing if too many connections get opened.

when you signed up for your net service your ISP should have asked if you wanted to buy or rent in the first place.  if you don't mind paying a little more you can buy from them, that way you know it's compatible with their service and they'll give you the instructions for programing and such.

Thanks, Internet friends. I will go forth and save money.