Is there anybody who can tell me wich external drives are compatible with the PTR1. For exemple: i want to buy an external drive and i know that the IBM micro drive compatible is. And also i know that i have use this drive with an adapter and that the biggest drive is 6gb. But this is rather expensive. Is there any one of you who can tell me something of the prices and also of the sizes of the drives. Because an big external drive would be very handy. Thanks a lot already. With friendly regards, Bob Bullee