I had the same problem on an Intel based R3000. Was not originally fitted for wifi so no switch present and no internal antennas.
After discovering that HP require that you only fit one of the specific cards intended for this model - and the mini pci card also has to be made by HP or the system will refuse to boot ("Incompatible Network Card") Broadcom BCM94306MPS worked for me, I installed software and found it still wasn't seeing anything.
Same problem - the card needs the 'hardware switch' which diodn't exist to be switched on.
Following your tip, I placed a sliver of sticky tape over the two contacts listed (11 and 13), put it back in the slot and it worked a treat. It's only low signal at the moment but that's not bad considering I'm still waiting for the antennas to arrive in the post :)
Thank you very much for passing on the info. I'm sure many people trying to install wifi in the Compaq Presario R3000 or HP Pavilion zv5000 and spin off models will be most grateful, I know I am :) Many thanks!
I suppose the next project should be how to fit a switch :) (and where)
I imagine that the motherboard probably has a two-pin connector somewhere on it to which the switch would be connected. Will have to see what I can find out.
p.s. there is a good site that shows how to dismantle the screen section in order to fit the antennas. Beware however this series of notebook is incredibly vulnerable to damage. I have read of people who have found that the bezel is double-sided sticky taped to the LCD. HP do not want you dismantling the screen on the R3000 / ZV5000 and even authorised service centres are apparently shipped only with the whole assembled top section. Nevertheless it looks easy, when my antennas arrive I'll know for sure :) These instructions are for a V2000 which is very similiar. http://www.screentekinc.com/lcd-removal-instructions_en,compaq.shtml