Found this excellent post by Darrell Norton in which he describes a way to make Adobe Acrobat 6 load up faster. In my opinion, all of the Adobe products take entirely too long to start, so I was happy to come across this post. One thing to note, Darrell gives the directory as:
C:Program FilesAdobeAcrobat 6.0Reader
which works fine if you have just the reader, but if you have the full version of Acrobat, the path is:
C:Program FilesAdobeAcrobat 6.0Acrobat
unless of course you have both installed. Good luck!
MasterMaq's Blog 
There is a great app you can use to make Acrobat load much faster. Here’s the link: http://www.tnk-bootblock.co.uk/prods/misc/index.php. It’s really an amazing tool. I thought it was something wrong with my installation of Acrbat before I installed speedup. From one minute to a few seconds to load a pdf file is really a lot.
great article. I will bookmark this