Ok, so after downloading another .SAR from Service marketplace I was able to find and install the 32-bit ODBC interface, the archive was:
MAXDB7908_36-20009122.SAR
Once I unpacked the archive I ran the SDBSETUP.exe file and chose the SQL Connectivity for ODBC which loaded both 64 & 32 bit interfaces.
Hope this helps the next person,
Sam