Help!!

okay here is the situation:
I have a forum with 3 radio buttons,
2 text fields and a button. I want to enter a number in the first text field and if the first radio button is checked is will mutiply by 5 if the second is check subbstact by five and if the third is checked add 5 and write it in the second text field. now here is where it gets tricky, if the valu in the first text field is below 10 i want it to say 15 in the second text field no matter what.

thanks in advance

In the button click event, check the value in the first textbox. If it is NOT less than 10, then process it.

VB Code:

'pseudocode
If NOT TextBox1.Text.ToIntegerOrToShortOrWhatever < 10 Then
'check for which radio button is selected, do processing
Else
TextBox2.Text = 15
End If

'pseudocode
If NOT TextBox1.Text.ToIntegerOrToShortOrWhatever < 10 Then
'check for which radio button is selected, do processing
Else
TextBox2.Text = 15
End If

what would I write to replace the texte in bold if the radio button's name is B

Surely you know a little VB.NET? I'm not going to give you all the code.

VB Code:

If Me.B.Checked = True Then
            'now do the maths.
        End If