1 calculator and 1 currency converter (module for joomla)

1) need to be created credit where you enter term ,money amount ,percent and as a result we get a repayment schedule 2) currency convertor which gets currecny rates from National bank site these two script are simple ones ,but require some PHP knowledge . So please apply if you have some knowledge working with joomla and php and don't waste my time and your also. Thank you beforehand! p.s. don't forget present your portfolio,what kind of scripts you have done so far.