lattice dotplot and graphic devices on Windows

I am using R1.4.0 on WindowsNT (the precompiled version from Brian Ripley's
website) and the lattice package (version details are at the end of this
message).
After producing a lattice dotplot, I want to insert the graph into a
MicrosoftWord document. With "ordinary" R-graphics, I have done this
successfully by copying the graph as a metafile to the clipboard and pasting
this into my word document.

However, when trying to do the same with a lattice plot, I encountered some
problems:

# simple example:

library(lattice)
test <- data.frame(a = c("A","A","B","B"), x = 1:4, g =

rep(c("g1","g2"),2))

trellis.device(width=3.35, height=3.35, color=F)
dotplot(a~x, groups=g, data=test, panel="panel.superpose" )

# this is fine on screen, but when right-clicking on the picture and chosing
"Copy as metafile", an error is generated:
Error: A metafile can store only one figure.

# However, "Copy as bitmap" works (but quality is poorer when pasting to
WinWord).
# What also works is chosing from the menu "File>Save As>Jpeg" (or Bmp).

# As jpeg and bmp work, I try to print this to a file directly, but get an
error:

dev.off()
trellis.device("jpeg", quality=100, width=3.35, height=3.35, color=F)
dotplot(a~x, groups=g, data=test, panel="panel.superpose" )

Error in grid.newpage() : A jpeg file can store only one figure.
# same with bmp:

trellis.device("bmp", width=3.35, height=3.35, color=F)
dotplot(a~x, groups=g, data=test, panel="panel.superpose" )

Error in grid.newpage() : A bmp file can store only one figure.

So my three points here are:
1) Is there a way to copy and/or save the graph as a metafile?
2) If not, can someone give advice which graphic format else is the best to
use here (it seems to me that bitmap is not)?
3) As saving (in jpeg, bmp) via the file menu works here, shoudn't these
graphic devices work with "trellis.device" as well?


---------------------------
version information:

version

         _
platform i386-pc-mingw32
arch     x86
os       Win32
system   x86, Win32
status
major    1
minor    4.0
year     2001
month    12
day      19
language R

# from the package Description files:
Package: lattice
Version: 0.4-0
Date: 2002/01/10
Package: grid
Version: 0.5
Date: 2000/11/07

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