Churchmouse,

thanks for your interest in avast.

  1. the setup program is completely self-contained and does not need Internet connection to operate. Therefore you can download it on one machine, then take it to another and use it there.

  2. A Win98-machine with 64M of RAM should be OK. For minimum system requirements of avast Home Edition, please refer to this page: http://www.avast.com/i_idt_1323.html .

Hope this helps,
Vlk