Please Help!--Metafiles & Blobs

I am writing a program that will save and retreive metafiles and bitmaps

from a
database.  They are stored in the database as BlobFields.  It works fine

when
I use bitmaps, but when I try to save a metafile to a BlobField using
the assign method,
it gives me the error : "Cannot assign TPicture to TBlobField."  But, in

the delphi
help files, it says specifically that you can.  So, if anyone has any
suggestions on how
to solve this problem, I would greatly appreciate it.

Thank You,
Jason Ratner