Aloha (better for an opening?
)
The E350 doesn't have a card slot, it does however support e-mail sending. So my suggestion would be to get the e-mail settings from O2 and send it through e-mail.
MMS is possible if the file is under 30Kb...at least that is the rule over here (Netherlands - Vodafone) But since you've said the file to be to big to send in the first place I doubt that will be an option.
Link to Samsung E350 on gsmarena.com
The bluetooth option won't work either, since the phone does not have bluetooth. It's the 350 right? not the 530, the ladyphone, which does have bluetooth.
Either way, hope this was of some help at least.
Cheers.
CBP