[Geekcop]

Before we discuss that, let me ask have you really familiarized yourself with your device and it's capabilities with the stock ROM? You need to read up on the particular ROM you're interested in and be aware of all of it's pluses and minuses before you make the jump. Don't be in a hurry to flash a custom ROM. I had my 700WX nearly a year before I flashed a custom ROM for the 1st time. All that being said, you need to copy the ROM image to your SD card, insert the card in your phone, and then depending on your device, there will be a sequence to restart it and have the device recognize and load the ROM