Doesn't matter on which workstation you're on, u should always use least privileged account. Most applications today are designed to run post installation with non admin rights. No matter how careful you may be, the possibility of viral/malware infection is possible when running with the admin account. Rule of thumb, use runas cmd or switch to admin to install programs, afterwards log on as a reg user. I've been doing this for 4 years now without any anti-virus or anit-spy installed on my home PC. Never had an infection to date (I use online anti-virus scanners). You can also run a batch file for any program that requires admin rights: runas /profile /user:portugal\christian "C:\Program Files\Microsoft Office\OFFICE11\outlook"
