preferably contact me with pgp encrypted mail to itsme@xs4all.nl

the easiest way to pgp crypt your mail is to use the following programs together:

You can find my pgp key with id 0x19915081F0133CB9 on pgp.mit.edu.
-----BEGIN PGP PUBLIC KEY BLOCK-----
Comment: GPGTools - http://gpgtools.org

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=3lRo
-----END PGP PUBLIC KEY BLOCK-----