An encoding problem has reared its ugly head and giving me no end of grief.
At the Wordpress end, type in (or more commonly paste in) this line of text:-

“Mares eat oats–and does eat oats—and…little lambs eat ‘ivy’.”

I'll point out that the double quotes starting and ending the line of text are not double quotes, they are in fact curly quotes. Try and find them on your keyboard. Chucked in for good measure are a few other non-standard type characters.

Within Wordpress it is correctly displayed as above, but at the MySql database level it is stored like so:-

“Mares eat oats–and does eat oats—and…little lambs eat ‘ivy’.”

You will notice that the awkward characters have been replaced by gibberish (technical term for crap characters).

The converter program merely copies data from the Wordpress MySql database and thus regarding the above, copies the line of text containing the gibberish (translated characters of the awkward characters) into Drupal.

I'm currently in the process of coming up to speed with character encodings and hopefully this will be addressed."

If anybody has any solutions or advice in relation to this topic I'd be more than happy to take it on board.

For those interested I've started a thread in relation to the above over at the Real Basic Forums