I thought it was to good to last. Working fine last night, came to boot up the PC this morning and once again it froze on boot up. Tried the laptop and it has a perfect wireless connection.
I think the problem is caused by a couple of programs that 'phone home' on boot up, ZA Pro in particular. If I disconnect the ethernet cable between the PC & router, the PC boots OK, if I then plug the cable back in I have a 'live' connection.
I have had a quick look at ZA Pro settings and have added all the DCHP/DNS/ etc relating to the router to the trusted zone to no avail.
If as I understand the router includes a firewall, is it safe to get rid of Zone Alarm? ( that is easier said than done as well)
May need to have a look at the ZA forums.