Hello every body

Im working in the DVS php editor .. when I get finished of writing my code

which already include a html code.. then I choose to run it with any one of

my browsers lets say FireFox then a massege appears ..It says :

File FireFox.exe not found please specify path to firefox ?

what should I do ? please I need a souation as fast as possible


note:THe same happens with all the browsers

Thank u in anticipation...