new install to three machines

can i do a clean or custom(leave swindows.old)on system using windows 7 home premium family upgrade pack on three machines one of which is 32 bit others 64 bit. and enter key codes and activate?.

The Family pack comes with both the 32-bit and 64-bit installation disks and the product key works on both versions. So yes, you can mix the installs.

Yes, you can do a clean or custom install.

Custom Install Windows 7

For a clean install, you need to use a small workaround. Heres how.

Clean Install with a Upgrade Windows 7 Version

thank you bill I just wanted to be sure before purcahse ps. do you get the license stickers with the family pack?.

The Family Pack has one COA sticker that is good for installation on three computers. You dont need to actually stick it on to the machine, just tuck it away safely somewhere. Also, make sure you retain all the packaging, receipts etc.- the family pack is a retail upgrade and the packaging is proof of purchase/ownership.

thanks again,again.

You cannot rely on Windows.old folder as a backup method, but must backup your files externally before install.

Since you have to do this anyway, you might as well wipe the HD of all code to get the cleanest possible install: SSD / HDD : Optimize for Windows Reinstallation

Then do a Custom install, with drive options to partition as you wish and format, leave Product Key blank during install, then do one of the workarounds given in the tutorial Bill2 links above after install to activate with Upgrade version key. Easiest is the registry edit - set a restore point beforehand.