Create Outlook Message From Navision

I want a button on a form which will Open Outlook to create a new mail.

I have use code unit 397 (Mail) to create new message but i want to add the some data from sales lines in body part.

Sorry, but what is the issue to setup Outlook like a default mail program and created same button like we have for email on Customer|Vendor|etc Card

Now i want to add a signature in a mail.

Adding a signature in code is currently something that is not possible. Not due to codeunit 397 but due to limitations of outlook.

OK Thanks.