Thing is though, if you don't understand Webmin, you've no chance of coping without any control panel I suggest www.directadmin.com; it's very reasonable at $29/month or $299 for a lifetime licence. You can go to www.hostauctioneer.com and get lifetime licences legitimately for about $129 on promo
Windows 2003 has a lot of vulnerabilities stopped by default. Easy to create an account. Just need to create a user in computer management, a web site in the IIS web and an ftp account in the IIS ftp, tats all.