This starts off with older stuff, newer operating systems are in later posts.
The recent computer topic
http://c34.org/bbs/index.php?topic=3699.0, and an article in today's newspaper, got me thinking about the need to reduce the photo sizes to post pictures.
The article notes that Image Resizer is a neat tool to use to make pictures smaller and make them easier to post without having to use the resample feature found in programs such as Photoshop, which require you to open the application, rename the picture and then resize it.
Image Resizer is a quick download from the Microsoft home page. http://www.microsoft.com/windowsxp/downloads/powertoys/xppowertoys.mspx
THIS LINK DEOSN'T WORK ANYMORE, SINCE MICROSOFT DECLINED CONTINUED SUPPORT OF XP. So...Google "image resizer windows XP" and it will send you to cnet and you can download it for XP. {Stu -- Dec. 26, 2013}
Go to the right side of the screen and scroll down to PowerToys Image Resizer. Install it. The way to install it is to go to the downloaded file (remember where you put it!) and double click on it. The Wizard will explain how to install it. It is NOT a regular applications program in that you do NOT have to open the program to use it, just RIGHT click on a JPG file in Explorer and a NEW line item will appear on the menu called "Resize Picture." That option did not appear before you downloaded and installed Image Resizer.
Then,
instead of opening any application program,
just right click on the filename in Explorer and the pop up menu has a
new feature:
"Resize Pictures" which allows you to resize single or groups of pictures.
Using the Advanced button gives you options on sizes.
What happens is that the same file name is used and modified like this:
photo123.jpg
becomes
photo123_redcd.jpg (redcd seems to mean reduced - how clever of Microsoft!) In some cases it is the same filename with a (Small) (Medium) or (Large) after the original filename. It depends on whether or not you have chosen to show or hide filename extensions in your Explorer (Tools, Options). Your computer, your choice!!!

Please note that this is not a standard "application" that you expect a download to give you an icon or a shortcut or even and .EXE file. It only works in Explorer when you show your list of JPEG files, and then you right click on the one you want to resize. You don't even have to rename it!
This should make it easier for you to post photos. The "small" makes them 38 KB, which fits within the 75 KB size limits.