VPN over Wifi issue

Hi all,

I have a PPTP VPN service , when I connect my computer directly to the modem and connect to my VPN service it works fine with no problem at all, I have tested it.

BUT

when I try to connect to the internet through my Belkin wireless router I get connected to the VPN service , it says authenticating and connecting and connected and all that and shows that I am connected , but it doesn't work for some reason, and when i try to visit a site nothing comes up, as if i am not connected to the internet.

When I disconnect the VPN I can visit the websites again through the wifi ,so it is not the wireless router issue.

Before you say Google it , I did Google it , and I got some articles but none of them helped,

and also in the Advance window in the VPN configuration , I enabled route all connections through VPN, and also enabled Verbose logging ,

Can somebody please help me out here , ??

thanks in advance,

not a router issue

Also I have tried the same vpn service on a Linux ubuntu and a Windows 7 machine, it works fine over the wifi , so I believe it is not the router issue ,

but some problem with OSX

is there any settings I can enable or disable to solve this problem??

If you're routing all connections through your VPN tunnel, is it perhaps just an internet issue on the other end of the connection?

Or maybe it's a DNS problem: have you tried checking to see if you can access a site by IP address directly?