When you access a client machine remotely using Dameware, clicking the Microsoft Office Button does not display the drop down.
This issue is also discussed on Dameware forum
Cannot see Office 2007 menu
Workaround / Resolution
1) This issue does not occur when viewing via Windows Remote Desktop RDP.You can use Windows RDP to remote into your client machine.
2) As per Dameware forum link mentioned above, enable "Show Transparent Windows" (toggle "View/Show Transparent Windows" button)