How do I send mail to craigslist?

I installed aol on my computer and use craigslist alot but now everytime I go to send an e-mail it brings up my aol mail. I want to know how to fix it to where it goes to my yahoo address that I use for all business transactions.. Can you help me?

When I try to answer an ad on craigslist, I get this message:the rejected e-mail was 'paptop@cox.net. Subject "Account. ...(blah, blah) I've called Cox Comm. I've searched yahoo help, I don't know what else to do.

i tryed to e-mail someone on craigslist as it just shows there personal id numbers and it would not let me send it, does anyone know how to answer , there ads??

currently when I try to send something it comes up with a microsoft application. I tried to change it in my default settings but I don't see yahoo anywhere on there. It is all microsoft stuff.

It's confusing. Shows the service provider as pop yahoo...asked for my user name and I put user name and password I have for williechapin@sbcglobal.net...gives me 2 errors....but I do not have an account with pop server... confused...real bad. I need...

I enter craigslist. I go to musicians and click on their ad. Then when I want to answer their ad, I click on the "pers . . . . . " to send a reply. It defaults(if you will) to the Yahoo send, but the "to" box never populates so that...

I cannot seem to get many replies when I respond to "email only" ads on craigslist when using yahoo mail. As a test, I made my own craigslist ad. My craigslist account ...show more

I got an error message that your e-mail service could not send it because of an error. Pls. tell me what to do. I am with Roadrunner who has an earthlink server. Thanks, handfd@yahoo.com

i do not use outlook express,it used to bring up yahoo mail screen, what happened