Ok...
I have the following at home:
P4 3.4GHz, 2 GB RAM, and a GEFORCE 6800GT.
no need for quadro, and I've worked on assmblies with thousends of parts.
the importent things are:
mid-high level CPU, at least 1 GB RAM, preferably 2, and a GOOD opengl graphics card.
quadro is not...