Installing pidgin on a new system and it is failing at installing (downloading) the spellcheck installation files from the openoffice site. So here’s the “fake” way of doing the same stuff:

Install Pidgin
Download http://it.thelibrarie.com/utilities/en_US.zip
Create the directory structure C:\program files (x86)\pidgin\spellcheck\share\enchant\myspell
Unzip the en_US.zip file and grab all of the files – copy to the newly created myspell directory from the previous step
Open pidgin – you now have spellcheck support