You can enable ICS. This how to may help.

How to setup Windows ICSWindows 2000 supports both Network Address
Translation (NAT) and Internet Confection Shading (ICS) allow workgroup
users to access to the Internet. ...
www.howtonetworking.com/Windows/ics.htm


--
Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on
http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on
http://www.HowToNetworking.com
"Duncan" wrote in message
news:fcaba999-3d3e-4924-a2c5-e03a4a98add4@1g2000prd.googlegroups.com...
> Hi there,
>
> I have two laptops running XP, one Vodafone 3G card and one netgear
> GT604 router.
>
> Basically I want the laptop without the internet connection to be able
> to access the internet through the other laptop's internet.
>
> How would one go about it?
>
> Thanks

Hi
If you want to use the second Laptop Wirelessly, you need a wire network
card in the computer with the 3G card.
Connect the Router to the Internet capable computer with a cable plugged
into a regular port,
All IPs have to be set to 192.168.0.x in order to accommodate ICS, the
Router has to be configured along these principle.
Using a Wireless Router as a switch with an Access Point -
http://www.ezlan.net/router_AP.html
Make sure that you have a valid Wireless connection between the second
Laptop and the Wireless router, and then configure ICS as mentioned in the
above post.
Jack (MS, MVP-Networking)

"Duncan" wrote in message
news:fcaba999-3d3e-4924-a2c5-e03a4a98add4@1g2000prd.googlegroups.com...
> Hi there,
>
> I have two laptops running XP, one Vodafone 3G card and one netgear
> GT604 router.
>
> Basically I want the laptop without the internet connection to be able
> to access the internet through the other laptop's internet.
>
> How would one go about it?
>
> Thanks

On Nov 8, 4:33*pm, "Jack \(MVP-Networking\)."
wrote:
> Hi
> If you want to use the second Laptop Wirelessly, you need a wire network
> card in the computer with the 3G card.
> Connect the Router to the Internet capable computer with a cable plugged
> into a regular port,
> All IPs have to be set to 192.168.0.x in order to accommodate ICS, the
> Router has to be configured along these principle.
> Using a Wireless Router as a switch with an Access Point -http://www.ezlan.net/router_AP.html
> Make sure that you have a valid Wireless connection between the second
> Laptop and the Wireless router, and then configure ICS as mentioned in the
> above post.
> Jack (MS, MVP-Networking)
>
> "Duncan" wrote in message
>
> news:fcaba999-3d3e-4924-a2c5-e03a4a98add4@1g2000prd.googlegroups.com...
>
> > Hi there,
>
> > I have two laptops running XP, one Vodafone 3G card and one netgear
> > GT604 router.
>
> > Basically I want the laptop without the internet connection to be able
> > to access the internet through the other laptop's internet.
>
> > How would one go about it?
>
> > Thanks

I have no cables, it is all wireless\

Duncan