MSN:MAC Router problem

[ElFlaco]

Hi,

I saw similar threads on the same subject ..but

I bought a Belkin router today to make my network wireless.
Everything works fine.. but it stopped MSN on my MacBook from connecting.
PC's with MSN still work fine. Yahoo Messenger works on my MacBook with
this router.
MSN on my MacBook used to work with my wired router.


I disabled the firewall on my router completely (no firewall on my Mac).
..tried (NAT) virtual server filtering the MSN ports.. (MSN windows ports?,
dunno if these are the same)
I joined the wireless network on one of the neighbours network, and MSN
works fine.. so it's definitely since the Belkin.

Anyone know how to fix this?

Many thanks!