how can i transfer my contacts (about 500) to new phone?

Thrue SIM is realy shit because i have in one contact phone, email, adress,...

Can i use IRDA?

or Nokia Suite?

or some another software? (support Oxygene 3650?)

I did just that when I got my 3650. Install PC suite with software for older nokia phones (it ask's you wheather to install it or not), then connect your 7110 with irda, start Pc suite, and use Data import, it should work fine.
And erase your SIM card before, because data on sim and phone will maybe match and it won't turn good on 3650.

thx, i try this..