Ever look for a way to use ebooks and documents on the S66? I discoverd MicroReader last night which reads text files and Palm Doc files. Among it's features is screen rotation, background/text color change, font selection, and auto-scroll. Oh, you can also keep your eBooks on the expansion card. The app is free and can be found at http://home.c2i.net/thvoslef/midlets/ The version supporting screen rotation is 1.4z, and is only for the S66.
I already have a collection of eBooks for my Palm, so this works out great for me. The Palm can convert most MS Word documents on the fly, then beam or send them to the phone. Just though I'd mention it.