Hi Dkole!
If you don't mind me asking, what part of the installation did you have trouble with?
Specifics would be much appreciated!
Also, a bit off topic, but the Aptana plugin only supports the legacy style of DOJO and the ESRI JSAPI.
It does not yet support AMD style, if you were planning to develop apps in that way (which is recommended with DOJO 2.0 approaching release).