I'm guessing it's a micro-ATX system so you would need a case that supports that specification. If it's an mini-ITX you'd need a case that supports that. You can usually tell by the number of expansion slots on the back or by looking at the motherboard.
You may also need a new power supply if the current one doesn't fit easily in the new case.
One other thing to be careful of is any proprietary connections that they use.
You may also need a new power supply if the current one doesn't fit easily in the new case.
One other thing to be careful of is any proprietary connections that they use.