How to load drivers after install

loaded 1.2.0 onto windows server 2008 r2.  works great!  i accidently deleted the x86 driver and now i need it back.  I cannot figure out how to load that driver?  I thought i might reinstall the program, but my only option is to uninstall first and i dont want to loose my elaborate multiprinter setup!!!  There must be an easier way to get that driver in there!  Please help?  -mark