This
is so annoying but...graphic programs' pixels are square and the
DV codec (and digital video in general) pixels are rectangular.
ARRRGH! So when you create graphics or photos for the screen they
can look streched. SO you want to set photoshop to accomodate
this difference. It is easy. PS 7.0 and upwards has auto sets
for this.
Go
to File, and down to New
Select
the above setting (or its newer inception). TA DA!