I have submited StarDict to Application Catalog.
The url is http://maemo.org/downloads/product/stardict
From there, you can click the 'install' icon to install StarDict on your N800 device.
Also I find hellwolf - a member of ChinaUnix has do some work on porting StarDict 3.0 to maemo platform. Here is his work.
I found your blog on google and read a few of your other posts. I just added you to my Google News Reader. Keep up the good work. Look forward to reading more from you in the future.