Pulls The Emails Off Charter

We got a new computer yesterday and so far not bad as far as setting up. The only problem I'm having which is taking hours to work on is that I use Incredimail. On my old computer, XP as with Vista we each have our own desktop (5 in the family) and we each have our own email account with charter, our high speed internet provider, With Incredimail it's just a service I guess the best way to describe it. It pulls the emails off charter and gives it to us by sync up. I don't know if I'm using the right terminology but hopefully you get the idea.

I went to Incredimail and downloaded from their site and we each have our own icons. On mine, it 's pretty much fine, I can get it and receive and send emails but the other 4 users cannot. I get this message all the time. Incredimail installtion is not complete you must reboot your computer before using Incredimail. I've rebooted at least half dozen times and at least 3 times I've unistalled and reinstalled the program.

I've called charter and spoke with a young man who says he just got Vista and he had some of the same problems (not necessarily with Incredimail) but only the administrator can use the programs and not any other users. My question is how can I get this program to work with all users? This is what I've tried.. I've tried to set them all as administrators and that only makes them get my emails not theirs. I've gone to control panel and users accounts to turn User Acct Control off.