We don't use Windows on a regular basis, but we have tried various FTP and SCP clients that will help you move files to and from your web server. Here are some to check out.

• WinSCP -- This does SCP, not FTP. Make sure your server supports SSH (if you use Pair or Hostbaby, it probably does).
• LeechFTP -- A friend of ours thinks this is the cream of the crop for free FTP on Windows.
• SmartFTP -- Supports regular FTP.
• FileZilla -- Feature-rich and free, but a bit slow in our experience.
• FTP Explorer -- Mimics the Windows Explorer.
• WS_FTP LE -- Free for educational users. We used this when I was in college.