msi won't install as system

Hi all,

I have a new package to push out that consists of 2 msi's.

Installing these as administrator works fine, but when trying to install as system the msi's fail to install.

Looking at landesk the only options I have are to install as system or local account (which won't have admin rights as we are a big site with 13,000 users).

Are there any workarounds to this?

thanks