Autocad help...

[Volf]

I'm using AutoCAD 2000 and designing models in 3-D. I'm having a problem plotting a sectional part (from middle of the part, out) of the 3-d object (don't even know if it's possible). What are the steps to be taken to be able to plot a 3-D model from the mid-section out?

Thank you for response

 

I keep coming up with the message "FATAL ERROR: Unhandled Access Violation Writing 0x0000 Exeption at 6c3dba4dh. Any possible idea as to what this means or information that could help me resolve this. Thanks greatly if so..