I bit, downloaded the 64 and burned to DVD. They gave me serial right away. I loaded and did custom because I wanted no possible remnants of Vista. The only issues I had was HP drivers for my HP Pavillion dv9000. HP sucks eggs when it comes to Windows 7 drivers. They have none. I used Windows update and used Vista 64 drivers. Hardest to find was video and chipset. Took a lot of snooping but got it going. Way faster boot up for those of you that had issues with dv9000's taking forever to boot with Vista. It was HP and all their add ons as my Acer box with Vista took half the time. I don't notice a difference between 32 and 64, yet. There are 2 program files folders, one for x86 (32) and the other for x64. Otherwise, pretty good. You can get side gadgets, but not a "sidebar", just wherever. Some I hear are buggy with Win7, so I opted to not get any. Overall, I like it. Drivers can be an issue, going 64 bit a little more issues maybe. I'm picky and I'm fully up and running tho.