As I said before, NT4 (server). The same can be done easily with 
Win9x and WinRoute software. 

It is both a bridge and a router. BROUTER if you will. A bridge 
because it "bridges the two topologies Ethernet and Token-Ring (in 
my case) from different networks. You can easily set one up with 
NetWare too. 


While the original poster must decide what solution is best for 
him, there are several options available that will not break the 
bank or that can be implemented with spare/excess supplies. 
-- 
Bob Mann 


comp.dcom.lans.token-ring 

Brett not even going there on size mate but trust me it aint small 
anyway back to the point at hand if anyone wants a goodish guide to 
how to do it without just chucking in the odd technical point here 
there and everywhere go to this site 
ftp://ftp.madge.com/technotes/t.pdf granted its for madge kit, which 
can be a great aid in migration as it offers a nice switch that can 
replace your current one and also provide a path into a ethernet 
network.  It explains the goodies and the badies of trying to do it. 
Its all about scaling it into your design.