I had my hard drive crash a few days ago and Dell is sending a replacement. The system came with Vista Home Premium installed and I upgraded it to Windows 7 in Oct. I know I have to reinstall Vista first. My question is twofold...will I need to download all the Vista updates before upgrading to Windows 7? And, since I'm basically starting from scratch (no worry about files, settings, etc.), would it be better to opt for the upgrade option or use the Custom option for a clean install? Any and all advice is appreciated.