I have photos on eMac OX but when transfered to a PC with a flashdrive, the PC says "invalid file format".

Quite possible. What fileformat did you save them as on the mac?
And did you format the flashdrive on the mac? That could make it impossible for a PC to read (depending on the filesystem you used).

Be a part of the DaniWeb community

We're a friendly, industry-focused community of developers, IT pros, digital marketers, and technology enthusiasts meeting, networking, learning, and sharing knowledge.