If so, how?
You certainly can. Just go to a command prompt and type ftp followed by the IP address or ftp site name, enter the password, and do all of the unix style commands like mget and ls. If you type ? at the ftp prompt it will give you help on the commands.
I think it works with any version of windows starting at least with win95.
If you want a fancy graphical ftp though you are out of luck.
If you want the graphical interface but fewer features, use Internet Explorer.
Just enter ftp://username:password@ip address/ as the URL. AFAIK you can even upload using drag and drop.
For the record, I unchecked the Automatically parse links in text checkbox. 
Here I’ll try the spammer’s trick: f t p://username:password@ip-address/ will work just fine as an ftp client.
Saranga that is a good trick. I wish I know about it a year ago. Instead I tried a bunch of ftp programs settling on smart ftp. A fine program but more than I needed at the time.
Just confirmation that you can drag and drop.
Also, default login is anonymous (if you just open ftp://ftp.xyz.com, or even ftp.xyz.com). To change the login, choose File/Login As…
Cool. Thanks all.