Strictly speaking, you shld be asking this question in the Series 60 section but since i can help.....
If u have a gprs account with your network, you can transfer the files to your phone that way. You can register with
[Only Registered and Activated Users Can See Links. Click Here To Register...] and use their free upload service to upload stuff to your account there, then download the files to ur n70 via wap.
Hope that helps out!