i hope ou meant 100mb not 1000mb :-p
most routers have 100mb lan now anyway
you could go for a g class router
depending on if its dsl or adsl pick up a belkin or a netgear
i find they are the best never had a problem with either of thier makes and you can pick them up really cheap
ive over generalised there but i dont think you can go wrong with most routers
andy