We use trac where I work and users that would normally be unable to use bugzilla appear to have success with the simpler interface of trac.
Chris
Switch to Trac, for example. It will import your Bugzilla bugs in a snap and you're ready to go. User friendly and much simpler and much more consistent than Bugzilla. http://projects.edgewall.com/trac/
The administrator can define custom reports, they're available under < View Tickets >. Click this and see.