I am using windows Xp Pro. I have Outlook Exxpress as my default email but also use I try to print an email an error message :
Line 228
Char 1
Error class does not support automation
Code 0
URL res://C:\WINDOWS\system32\shdoclc.dll/preview.dlg
I have tried typing "regsvr32 ole32.dll" in the start run Any help?

Try the command using below - Start, run and type
Regsvr32.exe %Windir%\System32\Ole32.dll

See if info below may relate to your issue
Cannot Print in Internet Explorer if Surfairy Is Installed (http://support.microsoft.com/?kbid=811165)