I am looking for a computer program to calculate the number of years
my savings (capital) will last using inputs of: current amount of
capital, pensions, living costs, anticipated reutrn on capital
investments and anticipated reate of inflation.

There is a good one I have used myself provided by Vanguard.  To
access it, go to "Retirement Planning" Vanguard Group
http://flagship4.vanguard.com/VGApp/hnw/content/PlanEdu/General/PEdGPPlnToolsRetirementPlnContent.jsp
and then click on "Can I afford to retire?"

The program will open in a new window (make sure any pop-up blocking
software you are using is turned off).

The program begins by asking you to provide your current annual living
expenses and the number of years until you will retire.  You then
input your estimated Social Security benefits (a table can be accessed
via a link to assist you in determining your estimated Social Security
benefits if you do not know them.  The Social Security Administration
sends an estimate of your Social Security benefits each year that
would be the most reliable).  You also input your annual pension
benefits and a factor for inflation.

This is then followed by inputting your current savings for retirement
and your estimated rate of return on your savings.  You can also input
any additional contribution amounts you will be making to retirement
accounts before retirement.  You also the option of calculating your
and your spouse's life expectancies.

With the above data, the program will provide you with the percentage
of your retirement savings you will spend annually, the number of
years your savings will last, and your estimated retirement period
based on your life expectancy.

I hope this free program meets with your satisfaction.

Sincerely,

Wonko

Not exactly what I need but very close. I can work with that very well. Thank you.

Go to any national brokerage web site, search retirement calculator etc..
There are plenty out there.