You might want to read the KiXtart Manual Appendix A!

Windows 9x cannot 'deep map' drives
Windows nT can 'deep map' drives if SUBST is used
Windows 2000/XP support 'deep map' witht he NET USe or the KiXtart USE command.

You can also map only one share per drive letter.

However, you might want to set appropriate permissions on subfolders to replicate the Novell behavior under Windows. For example, you can prohibit certain groups/users to even 'list' a folder/file. This would create a similar effect as what you described.
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There are two types of vessels, submarines and targets.