[GENERAL] which odbc version (32 or 64 bit) should be installed in Client ?

[sunpeng]

my server is pg 9.1.13 in win8 64, my client is win xp 32 bit, which odbc
version (32 or 64 bit) should be installed in Client ? is
psqlodbc_09_01_0200.zip or psqlodbc_09_01_0200-x64.zip?or others?
thks!
peng