notes on OSD sccm 2007

How do i install pxe service role on my server?:- http://technet.microsoft.com/en-us/library/bb680668.aspx

how can i add drivers to boot images?

1) http://technet.microsoft.com/en-us/library/bb633285.aspx

2) http://technet.microsoft.com/en-us/library/bb680705.aspx

where can i find WIM image?

You need to create by setting up reference computer and then capture a image
1) http://technet.microsoft.com/en-us/library/bb680705.aspx

2) http://technet.microsoft.com/en-us/library/bb694129.aspx

OR

you can create image through MDT (Microsoft deployment tool)