Must i have a Jailbreak if i want Infuse 2????

I am wondering if i must have a jailbreak for my apple tv2 to get infuse 2???

Yes.

Having a jailbroken ATV is a pre-requisite for installng inFuse on an ATV.

Where can i get Infuse 1?

Actually thinking about it, the recent announcement about inFuse 2 was for inFuse on iOS7 on iPhone or iPad. The inFuse release on ATV is already at 2.3.