I'm having problems with an an older airport extreme with a built in 56k modem that I use to network a household to a dial-up connection. The airport extreme was working great until recently when the dial up portion stopped working. Has anyone else had similar issues with an older airport extreme and any idea where I could get this repaired (long out of warrantee) ? The other option is to replace it but I'm unable to find any other wireless with dialup.