Depends on how you want to browse the pages. I believe if you have palm you have access to Avantgo and they have a channel system. Their site will have more documentation on setting it up. Still, if the palm pilot is connected through a wireless modem, Avantgo will quite happily handle standard HTML pages. On palm devices you can go to palm.com and download an emulator for their machines. I believe you need a bootstrap ROM though, which you may need to sign something like an NDA for.

For PocketPCs, you have the option of using pocket Internet Explorer, which also runs fine on standard HTML. Like the palms, microsoft has an emulator for their pocketpcs on their website. It's part of the Embedded Visual Studio tools. Works pretty well ;)

On my ipaq, I've got linux running and use the dillo browser which, yet again, works perfectly off of HTML.

The main thing to keep in mind when putting together a site for a PDS is to keep in mind are

- the screens are quite narrow
- colour may be limited
- javascript will probabaly not be available
- connection time is slow so take it easy on bandwidth

Things change too if you want to have information like articles on your site. Things get tricky if you want to create WAP pages for cellphones.