With windows 7, 8 and vista you can use the pre-installed snipping tool.
Go to the tab where you want to make the screenshot.
Click on the Windows Button and type “snip” into the “search programs and files” bar.
Open the snipping tool.
Now drag a frame around the area you want to make a screenshot of.
Save the screenshot to desktop.
Go to imgur.com and press the button “Computer” unter upload images on the right side of the page.
Navigate to desktop, select the screenshot and click on “start upload”
After the upload is complete, copy the link from your adress bar and use it as you wish. Send it to me as PM or post it in the forum.