SAS scan found ''fun love' virus-lots of questions - help please ?

Hello - did a total sys. scan with NIS -all was 'o.k. /then did one with Malware Bytes; then finally SuperAntiSpyware (free edition) and here's what SAS  found (i choose to have it quarantined and then choose to have it 'deleted' which required a reboot -does that program also 'remove' it from my computer ? 

         How did NISS miss it ;

         But then Malware bytes full system scan missed it;

         how can i do a 'search' to see if it's 'gone' ;

          i rec'd a Iphone photo other day - could it have arrived that way?;

          I have my NIS email scan set to 'in/out' scan, but could i have infected those i correspond with ?

Here is what SAS found:

Thanks in advance for any help -Edythe

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              Virus.FunLove
 D:\I386\APPS\APP23742\INSTMSIW.EXE
 C:\PROGRAM FILES\COMMON FILES\ZERO G SOFTWARE\SETUP FILES\{662693BE-61F9-45A4-87A4-824BA752C769}\INSTMSIW.EXE