Connecting With An Explicit Network Path

I have a DTS that pulls a file from a networked drive (generally using the u: designation) for part of its process. Recently, the server has been dropping network drive connections, so sometimes the DTS will fail (I'm not certain why it's dropping the connections, nor do I have the access or control to figure out such.)

I've been told that I should change the DTS package to use an explicit path (i.e., \serverfolder1folder2file.mdb instead of u:folder2file.mdb) to work around this problem. However, Enterprise Manager doesn't seem to like using this for the "File name" attribute in the connection properties. (This is an Access connection, if that matters.)

Is there any way to get the explicit path (probably the wrong terminology here) to work with the connection properties?