[R] ask for help

[don]

Dear colleagues,
I am a beginner of using R. I am involved in some microarray data 
analyses and found that R is the most common software in this area. I 
tried to install the free software today. It seemed to be successful in 
installing, but when I trigger the short-cut, I got a error massage 
saying 'Fetal error: invalid HOMEDRIVE'. I have no idea where the 
homedrive was defined (or implied) and how to solve the problem. I 
wonder if someone could help me to start the first step of this fancy trip.
Many thanks!

Don Li
National Cancer Institute of Canada - Clinical Trials Group