Rationale for Proposed Study With the availability of intensity modulated radiotherapy (IMRT) at the Odette Cancer Centre (OCC), there is an opportunity to explore the use of a much more intensive hypofractionation schedule for prostate cancer. Using an alpha/beta ratio of 1.3, a dose of 35 Gy in 5 fractions would be equivalent to 88 Gy delivered in 2 Gy fractions. For normal tissues (alpha/beta value of 2), this would be equivalent to 78 Gy in 2 Gy fractions. As such, the linear quadratic equation predicts that 35 Gy in 5 fractions should not result in any increased late toxicity for normal tissues compared to standard dose escalated radiotherapy. However, the biological dose to the prostate cancer would be significantly increased. As a safety precaution for this study proposal, the investigators propose to deliver 35 Gy in 5 fractions over 5 weeks (one radiotherapy fraction of 7 Gy per week) to allow for normal tissue repair.