http://pinyinput.sourceforge.net/
click the link that says download
then click
Looking for the latest version? Download pinyinput-1.1.0.zip (417.2 KB)
then wait a bar saying that the computer blocks pop-ups comes up at the top. Right click on it and click download file. wait again and click open when a box comes up. click on the program and press install. After go to start<control panel<regional and language options. Then press language options, details, pinyinput, add, check box and click apply.