Sorry I did not have such experience, but I guess it would be impossible to install. Which software do you have problem with? It is Acrobat Profesional 8 , the MSI keeps saying that the OS (win98) is incompatible after launching. I did edit this MSI with Orca.exe to remove all instances of Version9X EXCEPT those in Component table, there are many "downlevel_payload","downlevel_manifest","nosxs" instances with "Version9X" as condition there. It has to be deleted too? Best Regards...