Can’t connect to my wireless network – Please help!!!

Hi
I am having major problems with my wireless network.
I have tried just about everything.
I have a D-link DIR-625 Wireless N router and a Acer aspire 1712SMI laptop.
I have setup the wireless network so it is available under the wireless networks, i removed all WEP or WPA encryption and made it an unsecured open network.
The wireless connection connects to my 802.11g wireless card but I cannot access the internet. I have tried IE7 and Firefox 2.0 and still no luck.
I did manage to make a phone call through Skype which tells me it may be a browser setting or something similar.
Any help would be greatly appreciated.
Thanks