Can Outlook Profile use 2 SMTP servers

Here’s the problem – I have a Win2k Pro user running MS Office 2000 that uses her laptop on site to access her email via her network card – at home she uses the modem – prior to last week there was no problem because at either location the smtp server was the same, now however, we have just changed our dial up users to a different company. Besides having the user change the smtp server address when dialing up and again changing it when connected to the network, is there a better way?