Newbe Questions: Revolution vs. Dreamcard, Differences?

[Typing80wpm at aol.com]

I stumbled across the page on Revolution and Dreamcard.
 
I am a bit confused as to which product I should start with.
 
I have been a programmer since the 1970s, and worked with different  
languages and database managers.  For right now, I would like to try this  product at 
home, and develop a business application.  What can Revolution  do that 
Dreamcard cant do.  Is it a matter of being able to deploy  something commercially?  
If Revolution lets me do more things on my desktop  at home during the 
learning phase than Dreamcard, then I will choose Revolution.  If Dreamcard can do 
everything that Revolution can do except deploy, then I  would start with 
Dreamcard.
 
I realize that there is a 30 day trial period, but I would appreciate any  
advice.  I am going to read the pages at _http://revolution.runrev.com/_ 
(http://revolution.runrev.com/)  more  thoroughly after I post this. But since I just 
now joined this email listserve,  I wanted to "test it out" plus ask my first 
question.   Thanks