Hi newbie, thanks for answering! Here's my input to your questions 1.) Are you doing a CD or Network based install? This is a network install. 2.) Have you tested any of your mass storage drivers slipstreamed by themselves (to verify that they work individually)? Yes, I did. And they work just fine. They are mass stoorage driver for HP, IBM and Dell 3.) If YES to #2 and CD to #1: did you use a method VERY similar to the one posted here? n/a 4.) If YES to #2, NO to #3 and CD to #1: please detail the differences n/a 5.) What are ALL of the mass storage drivers you are trying to slipstream (just so we know)? hmmmmm...this one is not more complex than quesiton #4 *yet* so...what is the meaning of life? HP, IBM and Dell mass storage. This is a project where I have to include support for any of these servers during unattend installation on any branch office (this is a bank). The reason for my question is so that the customer, in case of driver additons, they wouldn't have any problem since this structure is very modular. So you know, I have folders for sources, profiles (unnatend files) and OEMs ($OEM$). If I can make my $OEM$ modular enough to simplify additions, then success is guaranteed upon simplicity on their operations. Really, thanks a lot for your help. I wonder wy I did get only 1 reply. Do you think the post title looks like numb enough to be passed out???