Is there any way that I can edit the programs which appear in this dialog. The one that pops up when Windows doesn't know how to open a file or you choose "Open with..." in the right-click menu of a file. I ask because a computer I'm working on has Acrobat Reader 4.0 on the list but not 6.0 which was recently installed. 4.0 was uninstalled completely before I installed 6.0. I haven't had any luck on google since windows, open with, dialog, etc. are very common.