Customized installation paths of SW2008 and 2009

The installation manager hangs on Winx64 when I try to browsefor another installation path for ether program and/or the toolboxfiles. I want to separate 2008 and 2009 installations because mydifferent customers have different upgrade abitions and then I needboth (or even a third version !)

Anyone else having this issue or a solution ?

Best regards
/ThomasSolidworksAdministration