TR viruses

[khalidabualia]

hello
suddlenly my computer has a virus like :.
TR DROPPER.GEN
TR CRYPT.XPACT.GEN
TR POISON.CPD
TR VUNDO.GEN
TR AGENT
TR VB.AGENT
TR PSW .LDPIN
TR PACKED.GEN2
SPR CBFUSCATOR.L
BDS POISON.CPD
but I search on net about these viruses and to solve the problem
I find some tools which solve these viruses and remove them , but these tools want a code activiation and there'nt any code in net
then I formated my pc , then I install avira , and scan all computer
I find tr/virtool.nb virus
plzzzzz help me

[Aleksandra]

Please read the rules here http://virusinfo.info/showthread.php?t=9184