turbo pascal writing windows apps?

Hi I have a question to ask.  I have borland pascal 7.0 for dos and am
just starting to write applications with turbo vision.  Is there a way
to write for windows using something in the dos version? I've seen a
turbo pascal for windows but it seemed to be nearly identical except it
wrote apps for windows.  Having just spent $240 dollars on the dos
version I'm not too e{*word*277}d about having to go out and by a whole new
version just for this. Shouldn't there be a way?