Expense Claim / Workflow

Hi,

I have a requirment in which the Expense claim should generate an e-mail to lotus notes when it is Approved or rejected with some text in the e-mail exclusively to Lotus notes. Yet the moment it only intimated in the UWL of portal (ESS/MSS) . where the intital text ramins the same no chages to it . can you pls let me know how to start this step by step as am new to HR Workflows...

Thanks,

Kumar