I am getting the "limited or no connectivity" issue on my laptop. I am connected wireless with Linksys wireless-G router to my home computer.

When I connect to my wireless network I am getting that error and the IP address is 169.254.105.221, but when I connect to one of my neighbors
wireless networks, everything works great.

I have tried ipconfig\renew to no avail.

I tried setting up a static IP and when I did, it showed no connectivity issues but I could not get on the internet.

My firewall is Comodo Pro.

It was working earlier today but signal strenth was very low even though I was right next to the router. I turned it off and now I am having the connectivity problems.

I would appreciate any help

Reboot. It should acquire new IP.
169 etc means the DHCP server in the router has not given you IP address.
What sort of connection do you have? If it's PPPoE you need to tell the router user name and password.
Is your router setup correctly? when you go to the Administrator tab or Status, does it say Connected and does it show IP address other than 0.0.0.0?
In Comodo, are you allowing trusted network (192.168.1.1/255.255.255.0) or are you blocking it? Are you allowing DNS servers that the router shows?
Whatever WEP or WPA key you put in the Linksys router must be matched by the TCP/IP properties of the wireless adapter on your computer.

For information on why you are receiving the APIPA address, as well as instructions on how to troubleshoot, refer to my response in the following post... this is a pretty common question.

http://www.bleepingcomputer.com/forums/topic133029.html