Golden Oldies

These are some robots from the first edition days of Warhammer 40,000: Rogue Trader.  I bought them to use with my Imperial Army, but they never actually appeared on the table.  For some reason I thought they would look good painted in metallic gold.

I remember the rules for robots back in the early days of 40K were kind of convoluted--you had to assign programs to each figure, and they could function only according to their software.  Anyone else have these models (and actually use them), or even remember what they're called?