Two ISP's. Cant select default.

Just added another ISP due to original going out of business soon. When dialing by clicking either or from clicking IE both connect. (at a low connect speed)
Question; With 98SE there is no right click "set as default" option in Dialup Networking. Like in printers.
My neighbor with ME can select which one to use by setting a default by right click/ default and get the little black check.
I dont have the option in 98se.
Other than removing one of the ISP's do I have an option to allow just one to dial.
Example...when connecting I get (2) verifying user name and password before connecting.
Thanks for any insight on how to set a default connection. Have been in all of properties and configured as much as our knowledge will allow.
Thanks.
Really I dont understand why there's no default option in the right click...

Hey, thanks JK for the help.
We went thru that process but for some reason the original ISP would still connect even though we changed the default. Totally weird seeing 2 verifying user and passwors and waiting about a minute to connect afterwards.
Finally removed older ISP in Dialup Networking. and realized I can use the new one to dial into old one by changing Phone number and user and pass.
So a good learning experience. Hopefully High speed will hit our area soon and all this will be moot. :)
Thanks again for the reply as it did confirm my process. When in doubt, nothing like a confirmation to let one know they are on the right track.
So I appreciate your support.
carson...