Customize Tasklist view in Outlook Web Access with Exchange/Outlook 2007

I am using Outlook 2007 and have a customized tasklist with user-created fields like ‘Problem’ and ‘Level’. On my office computer this works exactly how i want it to work, and I also share it with colleagues in the office (I had to set up each computer with a customised tasklist view).

I now want to access this same list from home via the Web Server. The only task fields visible however are the basic ones (subject, creation date etc). How can I add my user created fields to the web server view, without bothering the IT guy (which means I won’t be able to fiddle with Exchange Server, only my personal outlook settings)?