Hi Naveen G
1) Is possibly, if you can locate text before or after the checkbox and able highlight the checkbox, then you can use the MS Word VBO action ""Set Selected Checkbox"" to tick and untick checkboxes. Alternatively you can use the MS Word VBO action ""Select Next Field"" to go from checkbox to checkbox.
2) Not sure how this is possible, you might need to spy a Word document where you spy a dropdown element, but how to ensure that you press the correct dropdown, I have no clue. Perhaps other BP users, have suggestions? Can you send a test document with an example of a dropdown box in word?
3a) In order to locate the cell value, you can use the MS Word VBO action ""Get Table Cell Value"", e.g Table number = 1, cell x = 1, cell y = 1 to get cell 1 in column 1 in table 1 in document. However this action only works immediately after opening the document, after a couple of action, it starts producing strange errors, I have tried on office 2007. After reading cell value, you can use MS Word VBO action ""Set Table Cell Value"" to set a new value in respective cell. Alternatively you need to find a way to spy Tables in a word application, highlight table and copy cell values to a collection or to notepad to manipulate the text and paste it back into the table. But I would attempt with the actions in the MS Word VBO first.
Good luck
BR,
Mustafa