Is FS2004 worth it?

Hi,
I've been a big CFS2 fan until I started looking at FS2004, I Just want to know the pros and cons of FS2004 and I want these questions answered:
1. How realistic is FS2004?
2. Is there any "missions"?
3. Can I become a commercial pilot?
4. Do I need a cable modem for the "real world" weather
Thanx alot
CFS2 person
I've been a big CFS2 fan until I started looking at FS2004, I Just want to know the pros and cons of FS2004 and I want these questions answered:
1. How realistic is FS2004?
2. Is there any "missions"?
3. Can I become a commercial pilot?
4. Do I need a cable modem for the "real world" weather
Thanx alot
CFS2 person