amaya webdav does not work

Hello,

I was looking for an webdav editor and found amaya.
first I tried on MAC PowerPC - I configured the URL for webdav  as foolows :
username:password@homesite.com ( is this the right way to configure this ?)

Locking resources seems to work but when trying to save modifications on the document
I get the message : This method is not allowed
I askjed my proviuder and he assured me that webdav is implemented.

I also tried the Windows XP version with the same result.

Are ther other things that I have to change in the configuration of amaya ?
I noted the absence of the passwords sheet in the xp-version of the configuration.
I noted too that the version on MAC is unstable.

Thanks
Gustav