Excel macros that allow you to automatically dump a table in excel to a file in the form suitable for wiki or html. Macro text is in txt files but there is also an excel sheet containing macros called demo_converter.xls (the SHEET). To use do the following:

1. Copy table you want to export into the SHEET from your own excel file
1B. Select the cells you wish to export
2. Go to Tools -> Macros
3. Select the macro from the list (the name should be self-explanatory)
4. Hit Run
5. You will get a save as box. Select the file to write to or enter a new file name.
6. Hit Ok. 
7. The data will have been written to the file selected in step 5.
8. Open that file in your favourite text editor and go from there.