import pgp public key in gnupg

[David.Bauer at SCHERING.DE]

Hello,

I want to import a public key from pgp 8.1 into gnupg 1.4.1.
The pgp key is RSA 1024.

gpg returns this error messages:

gpg: armor header: Version: PGP 8.1
gpg: can't handle public key algorithm 100
gpg: key EEE64249: no valid user IDs
gpg: this may be caused by a missing self-signature

I do not understand the "missing self-signature" because the key has a
self-signature in pgp.
Any hints what I'm doing wrong ?

Thanks,
David.