NX2 and W7 64 bit?

Have been using NX2 64 bit for a couple of years now on win. 7. Works well. Since 2.3.0 one downloads the file and chooses which version 64 or 32 bit to install. If using color effex from nik software one needs their 64 bit version for 64 bit NX2. Latest version is 2.35.