new rim bolt pattern?

[Festively Jolly]

hello listers!  great morning here. ok its time to get the new rims and
tires.  ive decided 17 inch rims and some low profile tires.  now, i
don't think i can find any decent rims in this town so the net may be
the only way. the rim size will be 17 and the tire size is "205 40 17".
now what bolt pattern do i need for the 1988 Audi 90 FWD? its the 4 bolt
and is it going to be a P.I.T.A. to find some with this odd
configuration? im afraid i think so :(  maybe im wrong though!  so any
help is MUCH appreciated from you wizards.   
THANKS very much!