iNotes6.ntf - Printing calendar from Web - language problem

Hi, I’ve got a Domino 6.0.3 server LP ES on W2k . I’m using inotes6.ntf to create the mail databases. When users access their mail databases with IE 6 SP1 , everything is in spanish, but when they try to print the calendar, the PDF generated contains the days names in English. On the other hand I have a 6.5.1 server without the language pack , the client has his database in english, but its calendar PDF contains the dates in spanish.

Where is Domino getting the language to use to create the PDF ? 

Thanks in advance,

Miguel Angel Calvo