Newbie Needs Help

Hello...I'm new to this forum and need help with a phonebook storage problem with a Motorola V200 smartphone (Unlocked). I have attempted to copy from a SIM card that was used in a Samsung phone (T-Mobile) so that I do not lose phone numbers by placing the T-Mobile SIM into the Motorola. I tried once to copy from contacts to SIM but I can not "Select All" to copy across (Attempting to copy from T-Mobile SIM to contacts on the Motorola then copy from the Motorola contacts to a Cingular SIM). I get an error message indicating that phonebook storage is full. Is this due to having more than 350 phone numbers (Some are dups)? Or does this feature not reset itself whenever used? I am thinking I need to clear the phonebook storage and start over - is this the way to go? Note - The reason for going thru this exercise is to finally get these phone numbers to the Cingular SIM to be used on a locked Cingular Sony Ericsson V500a. Any help would be appreciated. THX