Concatenate And Bold

I have a simple concatenate in Excel...

=CONCATENATE(A1, ", ", A2)

Which produces:

This is, my text

Now, I want 'my text' i.e. the contents of A2 to be in bold.

I've played with the TEXT() function before, as per this page:
[url]

To get Excel to play nicely with date formats and stuff, however, my research has come to a dead end with Bold/Italic - with everyone suggesting that VBA is the only solution.

As I don't feel overly comfortable using VBA is there any other solution? (If not, is this a VBA 101 task or an advanced task?)