When there is a one OSD for all type’s of computers in the network and you want specific software deployed only on laptops, here is the howto 
What’s the differences between a laptop and a desktop? Correct, the battery. So the simplest way to achieve our goal is to check if there is a battery present in the system.
Open the OSD Task Sequence and add the required step.
During an OSD task sequence, I want the option to select if certain software is installed. This can be done by third party software solutions (like OSD++) but with ‘variables’ it’s possible direct in SCCM. In this example I’m using the Windows XP Task Sequence which is advertised to the Read more…
When creating a task sequence to deploy an operating system. It’s possible to ask for a computername when running the task sequence on a unknown computer, for instance a new computer. Advertise (‘NO’ mandatory assignment) the task sequence to the collection: All Unknown Computers. Click on thumbnails for larger Read more…
