Originally Posted by visualAd
The particulars of XP's security or lack thereof isn't really the issue. In XP home, if you have user accounts enabled and have set and administrator password you must supply it to logon. Even in safe mode.. Of course there are ways around this, but you will need a bit of technical knowledge to do so. And it cannot be bypassed in safe mode. Setting the BIOS password will make getting around it more difficult.
If you are that worried about the security of your PC. Lock it away or take the hard disk out.
I am not going to help you make a mail transfer agent in VB and I would storngly advise against anyone else helping you and like I said, if you can access your ISP's SMTP server from outlook and relay through it, there is no reason why you cannot access it from your VB program (provided it is installed on your home pc - which it is, right?).