I have the following on a shortcut for windows explorer, (My Documents is on my "D" drive);
C:\WINDOWS\EXPLORER.EXE /n,/e,D:\My Documents
I got this from someone else a long time ago.. I think the syntax is as follows;
n, (for new window)
e, (for "expanded", i.e. the folder is open)
D:/My Documents (is the older in question)
does this help at all?