How to Download and Play Replays

I've been having problems downloading and playing replays. I go to sc2win.com and find one I like, click download, and it loads it to folder that is not the replay folder. Once I move the file to the right folder, I go on SC2, and go to replays, and double click it, but it says it can't play the file.

Two questions.

1) How do i get it to send the file to the right folder?

2) How do I get the game to play the replay?

P.S. I'm using Vista.

 

Do I need to use SCAllin1?

 

Perhaps the replay is from an older version of SC2 and SC2 is not backwards-compatible with viewing replays? I am not completely sure of this. Also, thread moved to the correct forum.