This seems to be a fairly routine question from people but I'm struggling to find an answer. Here's my system details:

1. Windows XP
2. Bullguard anti virus and firewall - disabled Windows firewall (have tried disabling both but brick wall still showing)
3. Plenty of RAM
4. Plenty of disk space
5 Broadband
6. Belkin N1 MIMO wireless modem router
7. My home
8. 4.12.11 Pro and Java 1.5.0_06
9. Homecall
10. Test worked
11. Wireless router connecting 3 computers (my pc is wired - 2 others wireless)
12. Downloaded Pro in January and it has been working brilliantly until a week ago. All I can get is starting connection

Any ideas?

BTW not too technically minded when it comes to computers so basic english is useful when describing things!

Thanks