You don't need 64b version even you have 64b computer. For applications like PSPad it doesn't mater. 32 and 64b PSpad version are available in the PSpad developer forum https://forum.pspad.com/read.php?6,77090
-- <https://forum.pspad.com/read.php?4,77250,77261> PSPad freeware editor https://www.pspad.com
