If you have an apple gadget may it be your iPhone, iTouch, iPod, or iPad you need to have the iTunes software with you. iTunes act as interface between you apple device and your pc may it be windows or Mac. This software is a must if you have any of apple products but now there is an alternative for this.
You can download and check out this app here: Download iPhone PC suit 2.2 full version.
NOTE: THIS SOFTWARE IS NOT AN APPLE PRODUCT.USE AT YOUR OWN RISK