I can't get an ip address

Please help.

I have just downloaded Comodo Firewall and so far I can’t get onto the net. The Wireless card is consistently flickering between acquiring ip address and nothing. Please help as the alternative is to remove comodo and go back to using the basic firewall. Your help would be appreciated. By the way, I have hardwired the system to be able to send this.

I have gone into the stealth system and told it to accept my network - but it didn’t work and I don’t think the comodo system is very user friendly. I had it before I reformatted my harddrive and that worked fine - but not now. Please help. I’ve also checked the forums and can’t find an answer.