Interface not registered (Exception from HRESULT: 0x80040155)

I am using Microsoft Office Accounting Express 2007 and Office Word 2003 and am attempting to either send a quote as an email or save as a Word document. Here I am getting the above error written in the title. Can anyone tell me if there is any compatability problem with the Accounting software and this version of Word? Thanks.

If you are getting the error code 0x80040155 then all you need to do is, go to Start and then Run and then enter the below text:
REGSVR32 OLE32.DLL

and press enter again, check now if the problem is fixed.

I was getting the below error:
"The module "ole32.dll" was loaded but the call to DllRegisterServer failed with error code 0x800700005."

But the solution that you gave didnt fix anything, btw am running Vista operating system.

As a solution, at a command prompt, run Regsvr32 on all of the DLL files that are located in the WindowsDirectory\System32\Wbem folder on your computer. For more information, visit this website - http://support.microsoft.com/kb/318956/en-us