Hi Pet007,
You should be able to just change the file it saves to's extension to .doc. You'll notice there is a define for txt, you could either change this to doc or if you still want to be able to use txt, create a new define and use this. If you do this you'll need to also add a define above (as you see it defines an integer for each different format type and uses those throughout the program as well). That should give you a good starting point for modifying this code. Unfortunately it is quite extensive to actually accomplish this, or else I could give a step by step guide, but it is rather long. But you should be able to get it working from this. The reason this should work is because Microsoft Word (.doc) files understand plain text just like .txt files. However, if you want to add formatting (fonts, bold text, etc) you would need to use the ActiveX Instrument for CVI which just access the ActiveX server from Microsoft. For more information about ActiveX in CVI visit the following link.
Also, this link gives an example of using Excel with CVI through ActiveX, which may give you some useful information about doing this type of thing.
For more information on using Word's ActiveX Server, check out the following Microsoft Portal.
Word Developer Portal