Hi Cajun,
Do you have a bike? I'll presume from your posting here that you either already have one or are strongly leaning towards getting one.
At this point, I would recommend thinking of your bike training in terms of 'time in the saddle' vs. 'total number of miles per ride'. Starting with a moderate time interval of say, 20 minutes per ride, try increasing it slowly week by week-- most folks recommend 5-10% increase in length per week.
Dave