RpgSQL Install problems [was: RPostgreSQL Row Inserts on Remote Servers]

I know little to nothing about using JDBC, but the following caught my
attention:

p <- dbDriver("pgSQL")

Error in pgSQL() :
?Could not find Postgres JDBC driver
on/Library/Java/Extensions/postgresql-8.4-701.jdbc4.jar./Library/Framewo
rks/Python.framework/Versions/2.6/bin:/Users/a347549/Bin:/Users/a347549/
bin:/opt/bin:/usr/local/bin:/usr/local/pgsql/bin:/usr/bin:/bin:/usr/sbin
:/sbin:/usr/local/bin:/usr/texbin:/usr/X11/bin/usr/local/pgsql/share/jav
a

It seems that the character after jdbc4.jar is a dot "." instead of a
colon ":". ?I have no idea why (or whether it matters), but there
could be some name mangling somewhere....

Kasper