If you are using linux you might know the symbolic link functionality which allows you to create a (symbolic) link between two directories. A little freeware tool called junction from sysinternals adds this functionality to windows.
For example, if the directory D:\SYMLINK specified C:\WINNT\SYSTEM32 as its target, then an application accessing D:\SYMLINK\DRIVERS would in reality be accessing C:\WINNT\SYSTEM32\DRIVERS. Directory symbolic links are known as NTFS junctions in Win2K
[tags]freeware, windows, linux, symbolic links, junction, sysinternals<7tagS>[/tags]

Create NTFS Junctions aka Directory symbolic links
NTFS Link Windows Shell Extension
Link Shell Extension