windows user, linux newbie - ImageMagick Problem

Hi,

I want to reduce an image so that it is no larger than 100x80 pixels.

I then want the reduced image to be centered on a larger canvass.

Under Paint Shop Pro, I'd open the image then
>> image >> resize >> 100x80
>> image >> canvas size >> 100x80 centered on white

With ImageMagick I tried:

reduce image
convert -geometry 100x80 image1.jpg image2.jpg

create canvas
convert -size 100x80 xc:white canvas.jpg

composite image on canvas
composite image2.jpg canvas.jpg image3.jpg

It doesn't center

I can't seem to find out how to get image2.jpg centered on canvas.jpg.

And can it all be done in one command line?

Thanks

Got it!

This is what I did, created a template canvas. Shrunk the images then composited with template canvas using the -gravity center option.

convert -size 100x80 xc:white canvas.jpg

convert -geometry 100x80 image1.jpg image2.jpg | composite image2.jpg canvas.jpg image3.jpg

Sorry about posting unnecessarily.

Don't worry about the unnecessary post. Now the thread's been archived so anyone with the same problem can search for it.