Adding conditional statements as Math expression to custom text fields in views
Well you can override any of the output you have from views with a template override.
Goto your Views &gt; Display
on the right hand side in the box labelled 'other'

click on information next to 'theme'

This will give you a list of template pages you can use to over write the section you need.  A little trial and error maybe needed at first until you get used to what your being presented.

on the left hand side of the page suggested you have a link to the code you need to use.  Copy that code and paste it into the file name your targetting ( ie views-view-field--default.tpl.php ) and add in the theme/templates  folder your using.
from here on you can manipulate the code how you want using php

Hope this makes sense, as I wrote it real quick :)