Access to Scheduled Tasks

I am hosting Microsoft Navision on several W2K3 terminal servers and my

problem is that within Navision the users have access to Jet Reports. To

enable the users to scheduled reports they need access to scheduled task

however they always get Access is Denied when they try and open scheduled

tasks. If I elevate their rights to administrator this problem goes away but

obviously this is not an option for me. I have looked within the GPO section

for the task scheduler to see if this will help me but I seem unable to find

a setting or settings that work. Has anyone any idea how I go about giving a

standard domain user access to task scheduler without giving them full admin

rights.

Jon