It really depends how its done, dee.
If it is a cash settlement, then the money would just show up in your account and these shares would stop trading.
If it is a share swap into the new reorg, then the shares could and probably would trade wildly, based on the assumed valuation of the new reorg...think of a hot IPO...let's use the recent IPO of LinkedIn...the shares were priced at $75 (I think) but because the issue was hot, they immediately traded up to the mid 80's.
The answer "nobody knows" is partially correct, because we don't know either the value/price or details of the transfer of that value to us.
Hope this sheds a bit more light on the subject...