A strange icon has appeared on my desktop entitled 'Word Work FileD_3.tmp. I have no idea what it is or indeed where it's come from. I can't open it and it wont let me delete it either! How can I get rid of it please?

Are you currently working on a document in Microsoft Word?

If you are working in MS Word then save the document and quit the program.

If you still can't drag it to the Trash then read this: http://support.apple.com/kb/HT1526

Try holding the Option key as you drag it to the Trash. That usually works. If it doesn't work read the above article: http://support.apple.com/kb/HT1526

Did you close word properly? Sounds like you didn't. Re-boot your computer & the file should be gone.

I had exact same problem. Re-starting got rid of it - thanks!