e-mail access from outside LAN

[fitfixer]

I run a small business network that uses WorkGroupMail pop3 server, this works fine inside the LAN but now my laptop users want their e-mail accessable when on the road, I have bought some Sierra PCMCIA Aircards, these work fine and they can now retrieve their mail while off-site, the only problem is when they return to the office and connect their laptop to the LAN, Outlook 2000 still wants to dialup on the Sierra Card, I can configure Outlook to dialup when there is no network connection. but how do I get it to use just the network connection when onsite?
The Outlook clients are configured to collect the mail from an IP address [Static IP of our Firewall with port forwarding to the Mail server]using an ISP dialup,
Is there any way that I can configure so that when they try to reach this IP from inside they are looped back to the mailserver?
Mail server WorkGroup Mail V7.2 running on a NT4 Server SP6a, with a broadband connection,clients using Windows XP Pro SP1a & Outlook 2000,
I would be grateful for any help, maybe someone out there has come across this problem
Thanks in advance

 

[DestinysDream]

Under "My Network Places" you should show both connections. Go to the one you no longer want to work -> right click and hit disable. It should default back to the original server settings. If not go through device manager and remove the drivers for the extra hardware.

If anyone calls and says "I know a little something about computers" just tell them to reformat it.

 

[fitfixer]

Thanks for your suggestion Destinysdream,
At this moment the laptops are using 2 accounts, one for dialup and the other for the LAN, their mail is copied out to a "shadow" freemail account so that they can get it while off-site
This gives an error message because the docked / undocked profile disables either the modem or the NIC depending on which profile is used, it also results in every message arriving twice,
My plan was to use just one account, tell this to go to the static IP of the firewall and grab the mail, what I really need I suppose is some means of telling the network to NAT this from inside and forward the request to the server, when off site it works fine, the modem kicks in and dials up, I would also prefer if this process was transparent to users

FrankF
A+,Network+,MCSA