"Into" SQL statement problems with Interbase

I have an application that has a TQuery component with the following

Select Frame_Length
 into :VFrame_Length
 from FRAMES
 where FRAMES.FrameID = :VFrameID

This code fails on the 'into' statement with an "unknown token into"
error.  I'm using Interbase 5.0.  Into seems to be a standard SQL
statement, so I don't know why Delphi won't recognize it.  Anyway, help
would be appreciated.
Best Regards,
Bill Montgomery