Contacts and 'To' field

Contacts and 'To' field

When i click on icon in the contatcs to send mail i have only email address in the 'to' field. When i compose new email and write into 'to' field  it is automatically completed and placed name together with email.
I'd like to have only one option in the contacts to be placed into 'to' field automatically. because autocomplite places to many info into 'to' field. I suggest to place only 'nick' (or something else) into 'to' field. I dont want to send email with all of my data from contact in 'to' field.
The best i would want is to have only an email address within 'to' header field, but when i compose, of course, it can be all of data from my contacts in this field.

i hope you understand my english:)