Cisco 1751 VPN

Hi guys,

I have a cisco 1751 series router enabled for PPTP connectivity through the internet. I have assigned an IP address pool by:

ip local pool PPTP_POOL 192.168.39.1 192.168.39.10

When a user auths and connects, their "ipconfig" will look something like this:

IPAddess: 192.168.39.1 Subnet Mask: 255.255.255.255 Default Gateway: 192.168.39.1

They are able to access hosts on the internal LAN but can't access the internet while connected. The router has an entry:

ip route 0.0.0.0 0.0.0.0 Dialer1

Where dialer1 is the ISP interface. Any ideas? Do I need another route?

Thanks.