Unit Testing PL/SQL

I've been getting rather test infected recently and it feels good. I've been using py.test to write unit tests for gerald which had been rather neglected of late. Actually putting the tests together helped me figure out what I need to work on next, more news on that in the near future (I hope).

Emboldened by this spark of activity I am trying to introduce my colleagues to the delights of unit testing. Because they are predominantly PL/SQL developers I need a native unit testing toolkit to get them started. Exhaustive searching brings me to utPLSQL. Which looks good, but for the life of me I can't get it to install into my 10gR2 database. Has anyone got any pointers to help me out?