iContacts hooks into the winmo hook here in the registry:
 
	Code:
	 
[HKEY_LOCAL_MACHINE\Software\Microsoft\Shell\Rai\:MSCONTACTS]
"0"="Contacts"
"1"="\\Program Files\\iContact\\iContact.exe"
"2"=dword:00000001
"3"=dword:00000000
 That's how the program author did it in the .cab.
 
edit:  I did just post a new OEM for iContact v0.8, download it and check out the registry edits in the RGU file:
 
OEM_iContact_v0_8.....................................iContacts v0.8 Contacts Manager w/Setup utility