I agree, it's not the best forum to post in...

I can be of some help smile., but you will have to do your homework before: find some guidebooks and do a bit of reading, make some plans about what you're interested in (art? history? city life? countryside? seaside? mountains?...)3 weeks is rather short, and you can't see it all, but if you manage well, you can still visit and experience a lot.
Visit other travel related sites, or blogs, like Lonely Planet (meet you there!)