For example, I can't vouch for this code, but I found it at:
http://doodlescripts.com/News/article/sid=9.html
Use the code below to disable and enable rules. This could be useful during migrations. This should work for Outlook 2003 & Outlook 2007
================================================== ===================
'rules.vbs… On Error Resume Next
Set objOutlook = CreateObject("Outlook.Application")
Set colRules = objOutlook.Session.DefaultStore.GetRules
For Each oRule In colRules
oRule.Enabled = False
Next
colRules.Save
For Each oRule In colRules
oRule.Enabled = True
Next
colRules.Save