Installing Acrobat Reader

Hi,

I am having problem in installing Adobe Acrobat reader on one of my WinNT 4.0 Workstation. The installation starts after clicking the application but stops at the end saying ‘UnInstall Shield is open–Close uninstall shield and try again’. I tried to install and uninstall other programs like WinZip but that did not solve the problem. There is no Actobat Reader in ‘Add/Remove’ Programs.

Thanks for your help.