i have a linksys router, but i think the ports should be the same... here's an exerpt from a discussion on deja.net.
not exactly the same, but it should be similar anyway... hope this helps
Linksys Router Setup
1) Open Router Setup Page via browser using
http://192.168.1.1 address:
2) Setup Tab:
a. Host Name: (leave blank)
b. Domain Name: (leave blank)
3) Advanced/Filters Tab:
a. Block WAN Request: Disable
4) Advanced/Forwarding Tab:
a. Service Port Range IP Address
b. 113~113 192.168.1.100
c. 3337~3340 192.168.1.100
mIRC Setup
1) File/Options/Connect/Options:
a. Default Server Port: 3337
2) File/Options/Connect/Local Info:
a. On connect, always get: IP Address
b. Lookup method: Server
3) File/Options/Connect/Ident:
a. Enable Ident server: Checked
b. Port: 113
c. Show ident requests: Checked
d. Enable only when connecting: Checked
4) File/Options/Connect/Firewall:
a. Use Firewall: Unchecked
b. Protocol: Proxy
c. Hostname: (blank)
d. User ID: (blank)
e. Password: (blank)
f. Port: 3337
g. Initiate DCCs through firewall: Checked
5) File/Options/IRC/Perform:
a. On connect, perform these commands: Checked
b. /localinfo -u
6) File/Options/DCC/Options:
a. DCC Ports: First=3337 Last=3340
b. Max. remotely requested DCC sends: 4