It would help a lot if you'd post your actual log files - the pertinent parts, not the entire thing. Set Verbose=On in the pool you're using.
For simplicity's sake you might try creating the database with no password protection, in which case the datapath contains no password.
The new driver works, there's no reason to try the old one, that's a waste of time when trying to track down problems. The site you are reading this note on is running the new driver.
The version from mandrake 6 SHOULD be a 6.5.* version so you should be able to get things up and running. We've only tested the entire ACS release under 6.5.3, though, and won't make any guarantees for any earlier 6.5 release. 6.4 or older? FORGET IT. Won't work. Look at PG_VERSION in whatever path the RPM stores the database in, it will tell you if it is a 6.5.* version or 6.4.* or older.
As far as getting index.tcl to load automatically, are you sure you have something like this:
[ns/server/acspg]
PageRoot=/home/acs/acs3-pg/www
DirectoryFile=index.tcl
in your .ini file?
