Computer buggings 3

Further to my quest to find a solution to my odd dialog box displays I eventually found a site (I've lost the original but here's another http://www.albionresearch.com/misc/obscurities.php) that pointed me in the direction of the file windows/system32/mfc42loc.dll for MS Foundation Classes language specific resources. Once I changed its name the problem was fixed. Don't know what else uses this file!