How to get started with developing Internet Explorer extensions?

Question

Does anyone here have experience with/in developing IE extensions that can share their knowledge? This would include code samples, or links to good ones, or documentation on

Answer 1

In the Build Events tab, set Post-build events command line to: (x64) is listed below

"C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\Bin\NETFX 4.0 Tools\x64\gacutil.exe" /if "$(TargetDir)$(TargetFileName)"    
"C:\Windows\Microsoft.NET\Framework64\v4.0.30319\RegAsm.exe" /u "$(TargetDir)$(TargetFileName)"    
"C:\Windows\Microsoft.NET\Framework64\v4.0.30319\RegAsm.exe" "$(TargetDir)$(TargetFileName)"

I want the Build Events tab , set Post-build events command line to (32 bit operating system)

"C:\Program Files\Microsoft SDKs\Windows\v7.1\Bin\gacutil.exe" /if "$(TargetDir)$(TargetFileName)"    
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe" /u "$(TargetDir)$(TargetFileName)"    
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe" "$(TargetDir)$(TargetFileName)"