Designer 8.2 (along with workbench 8.2) was supported on these platforms:
Operating system Architecture
Windows XP Professional (with Service Pack 2 and above) 32 bit
Windows XP Tablet PC (with Service Pack 2 and above) 32 bit
Windows 2003 Server® (with Service Pack 1 and above) 32 bit and 64 bit
The product has come to end of life, so there is no official support for it now.