@ossobuco,
Not sure if this is what you're looking for, but this is how I resize and post photos on my PC:
Open a free Photobucket account.
When you see a photo somewhere that you want to post elsewhere, right click on it and save it to your computer. Remember where it is.
Go to Photobucket and click "Upload."
In the window that pops up, find the photo and double click on it.
After it's uploaded to Photobucket, hover your cursor over the upper right corner.
In the drop-down menu, click "Share Links."
In the next window, click in the bottom box (IMG). The URL will automatically be copied.
Go to the site where you want to post the photo and paste it there. (Ctrl + v)
If you want to resize a photo, hover your cursor over the upper right corner of the photo in Photobucket.
Click "Edit."
It will open to another menu that has "Resize" at the top. Click that.
You will see the current width and height.
Just change the numbers to smaller numbers.
Hit "Apply."
Done.