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Found this over at PSP Vault:
http://www.psp-vault.com/Article63.psp
Not the sturdiest solution, but worth trying out for those of us who already own MS and can't or don't want to buy MS Duo cards at the moment. Note that the author didn't test it with a MS Pro, although he had a MS Pro Duo and used the MS adaptor, which worked.
Found this over at PSP Vault:
http://www.psp-vault.com/Article63.psp
Not the sturdiest solution, but worth trying out for those of us who already own MS and can't or don't want to buy MS Duo cards at the moment. Note that the author didn't test it with a MS Pro, although he had a MS Pro Duo and used the MS adaptor, which worked.