1. Either buy a magazine with a disk - they almost always have it as a space filler. Or get hold of an FTP (File Transfer Protocol) program such as
WS_FTP - it will allow you to resume partial downloads from where it stopped, as long as you make it the default download manager - i.e. instead of getting the IE built-in program to receive the download, you use the FTP application which allows you to stop/start at leisure (again, any decent PC magazine should have it on their coverdisk - The Net for sure will have it).
2. Office and Windows XP will only work on single machine at a time. If you ditch one machine for another their program may force you to call a number to obtain a new registration code - a fairly painless exercise I am told. It will not allow you to run the same copy of two machines at the same time.
HTH
amofw