TokenRing to Ethernet bridging

I'm running a Token-Ring based nettwork with 8 win98se
PC's. I now want to install a dsl (ADSL) router. However,
the router has an Ethernet connection.

I have been advised to install a "router-PC" with both TR
and Ethernet cards in it in order to work as a bridge
beetween the TRing network and the router.

My questions are: Do I need any special software in order
to achive this? How can I route IP from the ethernet
router to the TRing network?