Vista - Wrong Keyboard Characters

Hi - I'm using Vista Business.

When using an office program, certain characters do not show up correctly. For instance the '@' symbol (shift+2) shows up as quotes.

Here's the strange part. I can type normally in notepad. This suggests that there's a setting in Office??

In either case, I tried changing Vista's language settings by right clicking the taskbar -> toolbars but the 'languages' toolbar does not appear. In other words, i don't have any other languages installed.

Anyone have any ideas how to fix this? Any help would be appreciated!

Thanks

Shift+2 for quotes is UK (maybe others)

I have just had a look in Excel and you can change the language for office (excel in this case)

Excel options --> Popular Tab --> Language settings --> Primary editing Language

I have a single workbook (Excel 2007) which has a US keyboard eg Shift+3 = # but all my other workbooks are (correctly) UK eg Shift+3 = £. The primary editing language is set for English (UK). Does anyone know how to change the keyboard for a single workbook?