Storing characters in SQL such as ® registered trade mark

I've set my datasource advanced settings to higher end Ascii characters along with unicode.

I'm inserting data into MS SQL using <cfqueryparam cfsqltype="cf_sql_char" value="#listgetat(form.apps,1)#"> and I've changed the settings in the database to NVARCHAR

I can cut and paste a registered trade mark along with a few other special characters (and foreign language) directly into the database and they store just fine

When I scrape HTML from a site, parse and then try to store it from a SQL INSERT, I end up injecting question marks where some of the special codes go, some seem to store, I've seen some Chinese and Russian characters in there.

Can anybody help?

Thanks

Mark