Welcome
Curmudgeon, because we don't want to run the risk of having any broken or dead link's in the main forum's we'd prefer you upload your images directly through the attachment option.
If your file sizes are over and above the board's limit I'd recommend you do as
franzibert suggested and zip your image's and create a contact thumbnail sheet using
Infranview.
Hope this help's
Curmudgeon.
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Nergy