Umlauts and the filesystem

Hi,

I'm using SnipSnap 1.0b3-uttoxeter on my site www.falkenauge.info. The system is running SuSE 10.1,
SnipSnap is running standalone with apache as proxy. Storage for Snips is the filesystem.

Now my problem: I'm trying to backup the filesystem to another machine (acutally a NetWare server) with
rsync. Everything works fine, except for Snips with an umlaut or an 'ß' in the title. On the place of the
umlaut or the 'ß' a '?' appears in the linux filename. The rsync daemon on the other side cannot create
directories with a '?' in the name, because '?' is not allowed in filenames.

Is there a way to work around that ?

Thanks a lot 

Rainer Backes