So, you're moving from a Micro-ATX to an ATX mobo. I'm assuming your case supports both? If so...
Sounds like you're not sweating the frills. It's probably fine for you. Is that XFX a SDRAM mobo? You'll need to get new DDR if so.
Also, does your power supply have the 4-pin 12V cable? You'll need it for the D845EBG2. The Micro-ATX power supply is different than the ATX. The 4-pin, 12V version for Micro ATX is called SFX12V. Make sure you can even use it with that mobo.
Here's a really good article to read that might help you.