OK, first basic thing is that you develop on a machine that has the oldest
version of Outlook installed on it that you intend to support. So you'd need
a machine with Outlook 2003 installed on it to support Outlook 2003 and 2007
(and soon 2010).

The other questions I asked are so basic that you really need to start at
the beginning. I don't know of any specific books on shared addins but you
can get some basics on that either from my book or Randy Byrne's book on
Outlook 2007 programming. You can also read some of the development articles
at MSDN. I'll list some that are useful.

Shimming, Shim Wizard: http://msdn.microsoft.com/en-us/library/bb508939.aspx

Deploying PIA's in a setup project:
http://blog.developers.ie/CGreen/arc...0/27/2427.aspx

Deployment (specific for VSTO but useful anyway):
http://msdn.microsoft.com/en-us/libr...ffice.11).aspx

I'd also go to www.outlookcode.com and review all the information there on
COM addins, there are lots of articles and references there.

--
Ken Slovak
[MVP - Outlook]
http://www.slovaktech.com
Author: Professional Programming Outlook 2007.
Reminder Manager, Extended Reminders, Attachment Options.
http://www.slovaktech.com/products.htm


"Gokul" wrote in message
...
Dear Ken,

Thanks for your reply.

What version of Outlook was used on the development machine?
Outlook 2007

What versions are you deploying to and supporting?
Outlook 2003 and 2007

Are you shimming your addin? Are you strong naming your addin? Do you have
a
manifest file? What sort of installer are you using? Are you deploying all
dependencies and requirements? Is the Framework of the correct version
installed where it's failing? Are the PIA's installed?
I am totally new to this. I have read about the above, and I am not clear
with that. It is possible give me tutorial links it would help me.

Also whether any books available to read about developing and deploying
for
shared add-in.

Thanks
Gokul