concatenating files

Hello,

I have a question about concatenating files that I feel is probably  
not possible to do using slide's client library (and Apache's  
mod_dav), but I'm trying to be optimistic.

After a client application uploads two files using slide, is it  
possible for the client app to then somehow concatenate the two files  
into one file on the webdav server?

Any help or ideas would be appreciated.

Thanks,
Tiff