"Mail" program?

by LolaAngell33 - 7/17/10 11:52 AM

Hardware Overview:

Model Name: iMac
Model Identifier: iMac4,1
Processor Name: Intel Core Duo
Processor Speed: 1.83 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache (per processor): 2 MB
Memory: 512 MB
Bus Speed: 667 MHz
Boot ROM Version: IM41.0055.B08
SMC Version: 1.1f5

I am using 10.4.11

I no longer use the "Mail program" that came with my iMac. It's not that I didn't want to, but I changed to "Quest" as my server and could not get it to recognize the Apple "program/application." So, now I'm using the "Quest mail"program. My problem is that when I try to subscribe to some (just some) mailing lists or websites, when I click on "subscribe," my old mail program opens. It has my old email address so is of no use. Any ideas on how I can get my email address changed in the old "Mail," or have my new mail program open when I click on a link?

Thanks, Old Granny Lola