hmm...doesn't seem to indicate either way..therefore, I think it's the 32 version. My laptop is 64 bit, but my desktop where I downloaded the instillation is not. I searched through the unzipped files from the  download and haven't found anything that looks like I could install an upgrade for it on my laptop. does anyone know if it's a seperate download for the 64 bit version? I'll check with E-on and let everyone know, but I think we all know how "helpful" their support can be....oh well