Putting account on "Hold"

Hi,

I am using: Microsoft Office Outlook 2003 on Windows XP Service Pack 2 build 2600, and I have the following question:

My Outlook is configured to check a few accounts, some of them are mailing lists with hundreds of emails waiting after a long weekend. I want to start the send/receive process but I don't want Outlook to check those accounts, only my main account because it will take forever and I don't have time for it now.

How can I configure to "put on hold" the other accounts? I don't want to delete them, just not check them for now.

Any ideas?

Thanks.