Please be advised, not all Poker Calculators are bad. This is just an example of one group that took advantage of a situation and placed a backdoor/spyware in a calculator download.
Here is the information from 2 of the leading Antivirus providers on this threat.
http://www.f-secure.com/v-descs/small_la.shtml
http://securityresponse.symantec.com...heckraise.html
Rick
Universal4