dEbo

Hi, at first thanks for great guides on windows-noob. (2. sorry for my english) I'm trying to test SCCM in our lab, but I would like to ask something. Current situation: SCCM SP2 R2 is installed on Windows 2008 R2 with MS SQL Server 2008. I have followed all the instructions described here: http://www.windows-noob.com/forums/index.php?/topic/487-how-can-i-install-sccm-2007-sp1-in-windows-server-2008/ After configuring IIS, WebDAV, WDS everything looks fine, got no errors for now. Anyway I'm still not able to boot from network PXE on client machines, or simply install client on them. I'm starting over since beginning. We're running on working AD and DHCP where I have no permissions, so I cant extend AD schema. Thats my question: it is necessary to extend AD schema? It is possible to use SCCM without this step? If answer is YES, what's the difference? Looks like, this is my main problem with SCCM and why I'm not able to setup everything correctly. thx for answer