Windows Vista Problems with installing applications

Just fired up my new Dell laptop with Vista. I installed Novell client and I am attempting to install my primary applications from my network. But everytime I do that I either get nothing to happen when I execute the setup.exe or the setup does start and stalls during the process. I have downloaded applications to my desktop and some that didn't install from the network install fine, others still stall during the install process. I have disabled UAC, my profile is an admin account and I have tried right clicking and installing as admin option. My co-worker is having the same problem. I just created my account as admin but have not fooled with profiles yet. Can anyone tell me what is causing this ?
Thank you,
Debra