Great answer! :-)LOL
Ulysses is correct. Sony indicates that the Vista drivers should be used for Win 7. Just check for 32bit/64bit.http://esupport.sony.com/US/perl/os7upgrade.pl?mdl=VGNNR498E
I had only two devices that registered with no drivers. After the first update, it dropped down to one. This sole device was the internal memory card reader. The Vista driver should be fine. This was based on my NR498E and should reflect yours also. FYI, but I installed the Win7 Ultimate edition.