Pass the values to Windows Form EXE ?

Question

Is it Possible to Pass Username and Password ., to the  Existing Windows Form EXE?

Bcas I wana pass Username and password from wpf to "Form  2.0 "

It was Already Created EXE .

In this EXE shows, what Ever username and password  i was send from wpf .,

 it will display on that 2.0 Windows Form EXE Textbox's 

if u know answer ......reply soon