Adding drivers to an existing Windows 7 install

I just found your driver packs, and I must say they are exactly what I am looking for to help me image.

I am currently "refreshing" my image to get them ready for a couple lab upgrades (250+ pcs of all different types) and I don't want to have to go into Windows Update for each one.  I looked at the guides on the site and what I see is things for slip streaming into vlite, which is OK but I don't want to reinstall my OS since I have tweaks and stuff like that.

I have Windows 7 pro X32 & X64

I use the Altiris Notification  Server 7.0 with Deployment Solution 7.1.  We are not using Deploy Anywhere as I can't get it to run consistently.

Any help would be appreciated.