Hi Jai, you seem to have already found the answer to your problem but I'm still curious about it because I dont really see the reason for your original request. You want to automate the copying & pasting from Word & Excel. A user will open up a file in either program, select the text they want to work with, switch over to your VB program, click an event and the text will appear in the VB app to work with.
If a user is already doing that much hands on work such as mentioned above, I dont see why they cant just copy the text and pasted it into VB rather then coding to automate both Word & Excel processes just to copy text that is already selected. There are different options available to read data from both Word & Excel files without the need of automating either program and there are also options to add Word & Excel functionality directly into your vb program itself.
With that said, if you do continue to work with office automation I found a cheat method I use that helps as a starting point at least when im stuck on syntax. In your msoffice program goto tools on the menu, click Macros then Record a new macro. Then perform your task in the Word or Excel program and stop it when your done. After that go back into the Macros menu and choose Edit Macro. The VBA editor will then open up and show you the coding it generated to perform the task you recorded. There may still be syntax diffences between what you see there & what you need to actually put in your VB app but you have something to work with and to look up now.