to large,getting closer!
Here's a freebie that I use.
Another way is to email yourself and attach the picture you are wanting to post. Open the attachment when you get your email and right click on it. Go to properties and you can see what size it is. It should be small enough to post. Save it, then put your thread on here and upload your picture. I have done it this way.
Mihov Image Resizer is one free program to do what you want. just go to Image Resizer and download the program. Miha has several other programs that might be useful, too.
This program can also convert between JPEG, BMP and GIF image formats.