I just got DSL for the 1st time ever. I had initial signal/modem problems that have since been fixed.

I need to know if I can use this:

Allied Telesyn
AT-FS708
10 BASE T/100 BASE TX
8 Port Fast Ethernet Switch

It has 1 row of 8 ports only (all together) without a seperate one off to the side.
By the right hand most port is says "AUTO MDI / MDI-X"

It has 1 LED marked "POWER"
It has 8 LED's marked "LINK/ACT"
It has 8 LED's marked "100M
It has 8 LED's marked "FDX"

It has a 110 Volt power cord.
It lights up when I power it up.

I just need to know if I can use this as a router for 2 computers and where do I plug in the modem line and where do I plug in the 2 computer lines.
And do I need to be powered down to do all of this and after making all connections do I power everything up and then start computers and do I just leave them "always on" after that?

I am running XP.

I am sure there is something I forgot to ask, so please just treat me like a "Router 101" case and walk me through this if you please.

Thanks so much!

Javamann