! eeek ! I thought my eyes had packed up and gone south.
Good heavens man! Listen to lardman - DO NOT TRY IT.
The 5500 is wholly different machine, different hardware, processor and more importantly a different ROM, if you try you may brick your machine - but you will get an attractive paperweight.
What are you trying to do, do some sync thing with a Windows PC? The Zaurus can do that quite happily, you need to find the instructions and follow it to the letter, carefully. I set up a Z for a friends Windows machine once (before I converted him to Linux) and it worked with Outlook with no problems at all, you can even use Intellisync if I recall. I think I didn't use the CD files, I downloaded stuff from the net.
You'll find tons of advice and howto info here, have a search, post some questions, don't kill your Z just to make it 'sync' with some PC.
Good luck with it.
-Francis