It looks like you're asking about a download for Windows XP 64-bit .
Would you like a safer alternative for running legacy XP software, or help with installing the 64-bit version on specific hardware? softlay windows xp 64 bit
Use 32-bit Windows XP (better driver/app support) inside a VM like VirtualBox or VMware instead. It looks like you're asking about a download
Here's the direct answer you need: