Getting next ID before insert

[eluser]Felipe Deitos[/eluser]
Pert: That was a nice option, now i got the code done, but next time i will try your way, because i really dont like the idea of the ID going Higher and Higher.

Normally i dont put the id on the name of the image, but i got this job already done, and i am updating it to CI and trying to follow the same thing it was before because there are over 2000 products and i dont wanna change it hehe.

Again, appreciated for your answers!

Cheers!