What OS are you on?
DO you have an administrator account, that is if you are on Windows 2K or Windows XP?

If so, try logging into another account, and doing it. It could be that your account is messed up.


Last thing.

If you can't figure it out and you dont want to use the rules only, you can emulate, or make a fake out of office assistant:

Follow the Rules Below

Defining an Automatic Reply Template

Open a new Outlook message formatted as plain text. Note: Do not use Microsoft Word as the e-mail editor.
Type whatever information you would like to appear in your reply message.
On the File menu, click Save As.
In the Save As dialog box, click to select the Outlook Template check box in the Save As Type list.
Type a name for your reply template in the File Name box, and click Save.

Defining a Rule to Send an Automatic Reply

On the Tools menu, click Rules Wizard.
In the Rules Wizard dialog box, click New.
Under Which type of rule do you want to create? click Check messages when they arrive, and then click Next.
Under Which condition(s) do you want to check?, click to select the Sent Only To Me check box, or any other criteria you want, and then click Next.
Under What do you want to do with the message?, click to select the Reply using a specific template check box.
Under Rule Description, click the underlined phrase, a specific template.
In the Select A Reply Template dialog box, click the template you saved in step 5 of the previous set of instructions, and then click Open.
Complete the Rule Wizard instructions, click Finish and then click OK.
The Rules Wizard rule to "reply using a specific template" is designed to send the reply only once to each sender, during a session. This prevents Outlook from sending repetitive replies to a sender from whom you receive multiple messages.

During a session, Outlook remembers the list of users to whom it has responded. Restarting Outlook deletes this list, resetting the rule to start again for each sender.

NOTE: Outlook must be running for the Rules Wizard to auto-reply. Also, it must be configured to periodically check for new messages and set to hang up when finished sending and receiving.


The above was take from the site below:
Emulate Out of Office Assistant

We will do our best to help. Got questions, just ask and we will see what can be done.

Keep at it. Computers can be a pain, but once you get them going in the right direction, they can be fun and productive!
BB