>>>I have a table of warrants with latitude and longitude, and I would like to be able to select all warrants within a given radius. I know I've seen this discussed before. Any of you math professors got a clue?
>>
>>GIYF: http://www.google.ca/search?q=lat+long+distance+between+points
>
>I didn't see anything about pulling records within a given radius....

To expand on Hilmar's response you could do something like

SELECT ;
  ... ;
  FROM Warrants ;
  WHERE DistanceBetween( StationLat, StationLong, WarrantLat, WarrantLong ) <= SomeDistance ;
  ...

FUNCTION DistanceBetween( StationLat, StationLong, WarrantLat, WarrantLong )

* Maths as per Google link(s)
...

RETURN Distance