I assumed that by 'external' Michel was referring to third party DLLs - in this case specifically ITextSharp.
Writing a full-blown PDF generator would indeed be time consuming but if the requirements are fairly basic it's not too difficult.

>Ummm...that doesn't really answer my question.
>
>>For ITextSharp if you don't want to publish your own source code you need a license - i.e. $
>>
>>Also ITextSharp is a ' all-singing, all-dancing' PDF generator. If you're only creating simple PDF stuff it's not too difficult to roll your own.....
>>
>>>I don't understand. What's the problem with an external dll?
>>>