iTunes Music Store Help

I've been using iTunes for ages - and had no problems using the music store, but since my router went bang and I've fitted the new one - I can't download from the music store - I can do everything else - Obviously it's something to do with the router but I've been through all the options and I can't sort it!!

Its a Netgear 108mbps router - DBsomethingGT

EDIT :

I used the wrong IP address in the firewall rule

All working now!!!