ftp://ftp.software.ibm.com/ps/products/
ftp://ftp.software.ibm.com/ps/products/os2/

ftp://service.boulder.ibm.com/ps/products/os2/

http://ps.software.ibm.com/pbin-usa-ps/getobj.pl?/pdocs-usa/softupd.html#newrsu
http://service.software.ibm.com/pslaunch.html