Luckily someone has written an installer for Windows 7 here:
http://cid-11e09a8750032f2c.skydrive.li ... 32F2C!1230
Unpack the CAB file and run the install file as administrator and the old help file should work.
(I don't know if this should go in Tricks/Tips or the Windows only category - if in the wrong place please can an Admin move it?)

