Ok, I haven't touched my machine since last post.
I am having 2nd and third thoughts on having only one drive for everything. I teach design and do run autocad and cs4 at the same time , and multitask between programs, sometimes accessing very large files. I am use to my dual hard drive laptop which this new system is replacing.
So I guess I need confirmation that there would NOT be much advantage to pulling out the 1 terabyte drive the computer came with a replacement with 120 gigabyte drive to install windows and program files on while the 1 terabyte drive will be placed in an external eSATA enclosure and simply lay on top of the system.