Resource Names and Automatic Capitalisation

Hi

I'm typing in resource names in the "Resource Names" column, and the odd one is automatically capitalising the first two letters and I don't want it to (I think this is because I may have typed the name in incorrectly at some point, pressed return and then it's saved and now choses the wrong one for autocomplete).

For example, my resource name could be "Christine PLC", and as I'm typing it, it's coming up automatically as "CHristine PLC".  Even if I type it in a different column with different capitalisation and copy it across, it defaults to the wrong one.

How can I mke this stop please (I've checked the resource sheet) else my programme is just going to look horrible with the wrong capitalisation everywhere.

Thanks.