Create a task for/from someone else

I'd like to be able to (as admin) create a task for someone else as if they created the task.

I want to use task as a means for people to submit technical requests, but I have a list of requests that I'd like to add to the technical mailbox tasks as if I was the person who reqested the task, so that they get the feed back on the tasks as they are changed/completed etc.

The only whay I can currently see how to do this is to open their mail box and create the task for them, but I need to be able to create tasks for lots of different people and do not want to have to open each persons mailbox each time I want to create a task for them.

Is there a way I can open a task form and add the from box as well as the to box? would this work?

Thanks In advance