If you are doing what I think you are doing (trying to run a live retail system inside a VM) then I strongly recommend you use something like VirtualBox instead of dosbox which would be much better suited to your needs.

the problem is that i need to launch dos apps in windows environment, because the dos apps and windows apps must interact.
if i create a separate environment like a virtual machine i can't use it with windows apps.
If i can launch with shortcuts and without changing the mounting i have solved the issue.

Create a c:/FilesForDOSBox folder, therein the ugalaxy folder.
mount c c:/FilesForDOSBox

Try vDosPlus, which is based on DOSBox, but is much better suited for applications. http://www.vdosplus.org/

If you're providing a path to the executable in your DOSBox shortcut (ex. "DOSBox.exe" <path_to_app>\MyApp.exe), DOSBox will automatically mount the <path_to_app> folder as the C drive, so you can't do that in your situation. Instead of that, add the command to run the program in the [Autoexec] section of dosbox.conf, after your mount command(s).

As for accessing network shares, I'm not sure if DOSBox supports that (maybe an SVN build does), but what might work is mapping those network shares as drive letters in Windows and then mounting those drive letters in DOSBox (ex. map \\SERVER1\FILES to N: in Windows, then do "mount N N:\" in DOSBox).

I am not currently aware of a DOSBox version that will access network shares directly. However, vDosPlus does support for this. For example, you can do either of the following in vDosPlus:

DIR \\SERVER1\FILES

Or:

USE E: \\SERVER1\FILES
DIR E:

The latter approach is preferred for DOS programs that do not support network paths.

Hope this helps.

Wengier