Finance formula

Hi List, I'm trying to create a php finance form where the user can input fields like principal, rate of interest, number of years, etc. and display a html table like below: At 10% Principal Increase p/a At 15% Interest p/a Year Yearly Principal End of Year Value (USD) 2001 $1,800.00 $2,070.00 2002 $1,980.00 $4,657.50 2003 $2,178.00 $7,860.83 2004 $2,395.80 $11,795.12 2005 $2,635.38 $16,595.07 2006 $2,898.92 $22,418.09 2007 $3,188.81 $29,447.94 2008 $3,507.69 $37,898.97 2009 $3,858.46 $48,021.04 2010 $4,244.31 $60,105.15 I've been scratching my head over the formulas - the curse of sleeping in math classes =) Any tutorials on creating finance stuff like this? Thanks, ian