Welcome to the driver and software download page. Some products here do not have driver downloads as they use either a driver that is in the list already in Windows (gameport-connected products) or use a driver that Windows installs for you when they are plugged in (USB-connected products).
32bit or 64bit?
All versions of Windows XP are 32 bit unless you are running Windows XP64 (check in the general tab of the system window), it’s nothing to do with having a 64-bit processor - e.g. if you have a 64-bit processor but are running normal Windows XP then you don't need the 64-bit drivers or software.
This makes the download sizes much smaller so that you only have to download and install the drivers for those products you own and then only download the programming software once, which will cover all the products.
When you have clicked your driver link, make sure you select the ‘Save’ option when prompted. Do not select ‘Run’ as this may impact on the installation of the driver.