If you're looking to go down the MSI route, the guys over at
www.appdeploy.com have something for IE6. I also believe Microsoft PSS can
supply an MSI for IE6, but I have never used it.
Here's the link
http://www.appdeploy.com/packages/detail.asp?id=102
Again, I haven't used that method and have no idea how compact it is, but it
will almost certainly be better than using WinInstall LE.
If you're really short of space on the CD (and I take it you've already
removed the unnecessary folders from the root of the CD and from inside
i386) then I'd suggest giving a DVD a try. Of course, this may not always
be practical.
I think Gerry's point about future service packs and update rollups (I know
that Microsoft have said there will be no more SPs) was that machines you
deploy using this method may have patching issues. I take it you don't
normally redeploy machines when an update comes out.
While I'd have liked there to have been a method for slipstreaming IE6, I
just feel inclined to deploy it by the book from a supportability
standpoint. Although things may seem to work, you never quite know whether
all the files and registry entries are installed properly.
Good luck in your experimentation, though.
Cheers
Oli