Junction points and symbolic links

This question should probably be in a developer forum, but I wasn't sure
which one.
In my program I enumerate directories (Directory.GetDirectories). If a
directory has the FileAttributes.ReparsePoint set I want to
a) identify it as a junction point or symbolic link to another directory (is
this as easy as checking the FileAttributes.Directory bit?) and
b) find out what the target directory is.
Can anyone put me on the right track (I imagine it will require a platform
invoke of some sort, but maybe I'm being pessimistic!!)
Thanks
--
Dave