Thats not too bad of a fix. You will need the Bosch VE pump gasket kit, a few people on Ebay sell them if you dont have a diesel pump shop around you. The gasket kit part number is DGK-121.
Here is a link with good pictures and write up on replacing the o-rings that are leaking. You will have to take the lid off your pump to do it.
http://www.dieseltruckresource.com/d....html?t=153154
This is a cummins VE pump, but its the almost the same pump with a couple different looking outer parts. Either way, the afc housing is the same thing. The gasket kit does everything from the 4cyl vw VE pumps up to the 6 cyl cummins pumps.
Hope this helps.
Jason