Postimage appears to be a good tool for the job.(copy, crop, upload, paste all in one place) Just don't know about needing to download another program on a computer to do this.
Tinypic is just one a many upload sites for this operation, so no need to download anything. Most OS's have a means to copy, crop, and paste built in. Win7 has 2. Paint and the snipping tool. I use Paint, unsure of using snipping tool, have heard it is actually easier. I started with Paint on XP and have just stuck with it.
Scott showed you how to upload and insert the link into the forum. Use the FAQ and you can find how to use Paint to copy, edit, and save your scorecard. Then follow Scotts'.
Don't get me wrong. Postimage looks nice, but just don't see the need.
Edit. On a side note Big. If you didn't save that scorecard somewhere, it is lost.