Errr...sorry...but is this a joke...???
Start reading the manual...maybe that will help...
Edit :
Because i am in a good mood....here is what you can find in the manual...
To select the desired Bank, first press the BANK button. The Virus will now prompt you to select a patch bank.
Alternatively, you can hold the BANK button down and select the desired bank without this screen appearing.
Now press any of the top row of buttons, labelled ROM 1-8 to select a ROM bank, or one of buttons labelled RAM 1-8 on the bottom row to select a RAM bank.
Now the bank has been selected, choose the specific preset by simply typing the patch number using the upper row for the first digit and the lower row for the second.