ASKER
Microsoft Office is an integrated suite of applications that includes Outlook, Word, Excel, Access, PowerPoint, Visio and InfoPath, along with a number of tools to assist in making the individual components work together. Coding within and between the projects is done in Visual Basic for Applications, known as VBA.
TRUSTED BY
http://technet.microsoft.com/en-us/library/aa996719%28v=exchg.150%29.aspx
Or Exchange 2010:
http://www.microsoft.com/exchange/2010/en/ca/system-requirements.aspx
Also, is the server running slow? Are users complaining? If the answer is no, then a second server may not be necessary. But also keep in mind that it may be better to replace the old server with a newer one; on top of being more powerful to meet your users needs, newer hardware comes with a longer life span.