Can I install Ice Cream Sandwich on my HTC Wildfire?
I doubt it, but take a look at the new CM9 release of CyanogenMod and see if the Wildfire is supported. I have the HTC Desire and haven't bothered checking as I'm happy with CM7 (Gingerbread) but I think the Desire is missing some needed hardware features and as the Wildfire is lower specked than the Desire it is probably not going to be supported either.