Maybe I am missing something here. I want to assume that you have your bookmarks stored in internet explorer, netscape or some other browser within your computer. Unless compuserve is doing something a lot different than most other ISPs that should be how things are set up, please correct me if I am wrong. As long as they are stored within your computer there should be no problem. Just change the dialup information, login ID and password etc for your new ISP and you should be able to continue like nothing ever happened.
Marc