You are a magician
Only last question...
I think that there is a lot of Blade3D IGP graphics card because this chip was used in different chipset:
VIA KL133 KLE133, PLE133/T and MVP4, for 370, socket A and the last for supersocket7
http://hwbot.org/submission/2204282_mr.paco_3dmark2000_blade_3d_integrated_482_marks/
Me and Retromayday have Blade3D IGP integrated on VIA MVP4
I only suppose this...
If you search it on VIA website you can find this information