It seems that a lot of people have an issue with resizing and uploading photos. I had trouble at first as well. Here is how I do it. Go to any search engine (Google is what I use) and search for Picasa free download. Picasa is a free program put out by Google. Install the software. Run the software. It will search for all of the photos on your computer so you can access them simply while in the program. Once the software is installed and you want to import new photos, simply plug your phone, camera, or whatever you are taking photos with into your computer. On the top left hand side there is a "Import" button, click than and it will bring up all the photos on your device, there is a check box that says something around the lines of "Ignore duplicates" Check that to avoid redownloading photos to your computer. After the photos are on your computer, they are in folders by the date they were uploaded. Click a photo you would like to resize, click file at the top of the page, and then select Export. After selecting export it will give you the option to resize the photo. I believe all the ones I upload are sized to 640. Then click export. The file will be moved to a subfolder under export and the date. Then you can uplosd you photos to your posts!