W7 32bit may work 64 bit you'll have issues 64/32bit issues regarding the DIGI9632/52 check rme forum
This card works great with 32-bit Windows 7, but I'm pretty sure that it's a no-go with the 64-bit version. This also applies to 64-bit XP.
i have the HDSP 9632 on W7 64 bits i had a lot of trouble to install the card: you double click on the driver or firmware, nothing happens... finally in the device manager it worked. i installed the card in the pci slot n2 on my motherboard so i had also a booting problem with it (conflict with graphic card): the soundcard only works after rebooting the computer. i contacted the RME support team, they said it could be due to chipset P45 or H61
There might be isolated cases of hardware conflicts but 99% of the time this card will be fine on Win 7 x64. I am running RME HDSP 9632 pci on Win 7 x64 and its cutting grand. You can download the latest Win 7 x64 drivers from the RME site but take note that there is no .exe to click on in the driver pack.You must click on update driver in Device manager and browse for and open the HDSP.inf file. all the best