I did some checking after my last post - I think I might have been wrong on the double \\...
A couple of things:
1) Are you able to use a UNC name?
\\MyServerName\Path\sample.dbc
2) If not, try something like "Data Source=\\10.0.0.10\Share\mydir\sample.dbc";
(not sure if you'll need the "share" or not, and I don't know if you have a subfolder underneath, so you may want to try different combinations)
3) Check out thread 898151 - there was some discussion on this a while back.
Kevin