Googled this already, and there does not appear to be a spell checker available for Lync 2010, but see that there is a work around for Lync 2013:
Lync 2013 client tools
Posted the above link so you'de get an idea of what I'm looking for.
The version of Office is 2010, with Lync 2010 running under Win7.
Let me know if anyone knows of a spell checker that works easily with Lync 2010 please.