Word 2007 crashes network PC when saving file

[buttlodge]

Hi
When I try to save a Word 2007 document produced on my laptop to my
wirelessly networked PC hard drive the PC where I am saving the
document to crashes everytime.
I am able to save to my laptop hard drive, and I am also able to save
any other type of file to the networked drive. I have also tried to
save in either word 2007 standard format and the 2003 compatible
format, but I still have the same problems.
I have uninstalled 2007 at the moment, re-installed 2003 and
everything is fine.
Any help would be most appreciated.
Thanks