only for my files, i always thought its not possible to have multiple sites with hostheader on a IIS running HTTPS.
http://www.microsoft.com/technet/prodtechnol/WindowsServer2003/Library/IIS/596b9108-b1a7-494d-885d-f8941b07554c.mspx?mfr=true
PS: hwo to backup weblogs.asp.net?