When you say you are going to contact your IT folks, are you running BES? If so, you don't need this. If not, then this is an option.
First of all, can you connect to your mailbox using owa?
If so, then you will need to do the following:
(btw - all of this is described in the blackberry help screen - click help and select add e-mail account)
sign in to your BIS account
go to profiles
select e-mail accounts (other email accounts)
select add account
enter your email address (the full address for your exchange address)
enter the name you put into the log on field
(this is your user name)
enter your exchange password
repeat enter your exchange password
At this point I think (I did this last night and it won't let me do it again as my mailbox already exists) it asks you to select what type of mailbox it is - select the mailbox type that allows owa
You will probably be asked to download the mail connector - this is downloaded and runs in the system tray - do this, I did and I think it is needed)
Once you have done this, and the mail connector is running in the system tray then send an e-mail to your exchance account and wait to see if it gets to your berry. It may take up to 15 mins.
I have mine set up on a spare laptop - one that runs some services on my home network - so it is always on and running. I f you are doing this from a laptop that you want to travel with - then you are better off just using re-director.
LEt me know how you get on and if it works for you. PM or post if you need more help.