Hi,

there isn't much to be found on this over internet.
Some mentions (and Czech language is missing in the list) can be found at
http://technet.microsoft.com/en-us/library/ms176076.aspx
Also the related articles offer further information.

I found also an unanswered question (in Czech) asking for Czech wordbreaker and stemmer...

Also some mentions are in the MOSSO servicepack1 post...

If we spot some useful information, we'll try to leave an update here.

Regards,
ZdenekC.