Paul,I will have to get my wife to show me about the windows explorer
 features. I use it as a filing cabinet to shift files around and
 exportdrawngs to a CD. I was unaware of it's other  uses. I have
 XP home on one
 computer ans XP professional with the nemesis titan overwrite on
 the cad
 computer. This internet computer is Vista and works well unlike
 the first
 Vista which was awful. It is constantly getting  updates over the
 internet.
 I am reading the manual in Catia currently and find the drawing style
 similar to solidworks without all the extra files for everything.
 It is
 similar to autocad 2010 in that the parametric relations and
 constraints are
 mostly created in the background as you dray whereas solidworks
 requires you
 to do that also. Both catia and solidworks use multiple line
 colors on the
 screen to show what level of constraint each line has. Autocad
 does all the
 parametric constraints without operator input and will run with
 everyhing on
 a layer the same color.Catia also requires constructing drawing
 planes to
 construct lines on where that is optional on autocad. I downloaded
 what I
 hope is the manual for Rhino V4 but can't open the rar file
 extension which
 is an alternative compressed file.I have bought a lot of software
 to open
 files and refuse to buy anothe. If people can't use  one of the
 hundreds of
 current formats I am just not interested in their products. I may
 buy a
 Rhino book on Ebay to evaluate their system as I did with
 solidworks, catia
 and autocad. As it stands autocad is lightyears ahead of the other
 contenders. Instead of twenty pages of sketch commands it has 800
 pages of
 drawing commands only 50 of which I actually use.All the systems
 require an
 add on to get usable finite element analysis or fluid dynamics.

 george grimes

 I want to see some ACAD renderings.

 Paul Lamar

I'm certainly not trying to start a "this is better than that" argument. I've not run
Acad2010 but I am running SolidWorks and I would say w/ great confidence that
There is modeling abiliity in Acad that is better than SW.

As Paul has noted I'd like to see a ACAD rendering or 3D model which is as detailed
as a SolidWorks model, yet is parametric and renderable. I very much doubt that it can
be drawn as quickly as a SW model, or a Rhino model for that matter.

There is no question that these 3D modelers have a steep learning curve, but once your
over the hump the power is unbelievable.

I've attached a couple snap shots of model's that I had on this computer. Btw, the fuselage
shape on that plane is driven by ~85 equations all driven from a set of controling sketches.
I'm able to control the corner curvature of the model simply by dragging those controling
sketches.

Fwiw

Jarrett