I am about as new as they come (48 hours) and am having a hard time learning how surfaces, curves, and polys interact. I imported an adobe illustrator file as curves and that turned out excellent. I run into problems when I try to make something of it. What I want to do is have a thick rectangular extrusion with my name as a relief (as per the logo).

I extruded the nurbs rectangle as bevel plus without any bevel and did an 'S' for my name as the same. I am then unable to subtract the 'S' from the box. This is working with surfaces and curves.

I then tried to have the bevel plus result in quad polys and the extrusions work just fine but the end caps of the box and S are not allowing me to use the insert edge loop tool. I get the error: "WARNING: select an object that allows topology modification". It looks like the bevel plus tool doesn't turn the end caps into polys --- what are they then?

I really am just doing this all as an exercise so any guidance - even if it doesn't solve this problem - is welcome (like if there are better ways of going about things...).

-Thanks muchly!