VB program Frozen..

[programmingpat]

Really I think the easiest way would be to determine what units where initially selected and code in the radio button:
If metric was initially selected and optImperial.Checked then
Display RoundedImperialValue
else if imperial was initially selected and optImperial.Checked then
Display Imperial value
Else if imperial was initially selected and optMetric.Checked then
Display RoundedMetricValue
Elseif Imperial was initially selected and optImperial.Checked then
Display MetricValues
Endif

I know the syntax is not ok there but its just to give you an idea of what I am trying to do.

EDIT1:
Sorry didint see what you had just posted, And yes I realise that I should have structured the whole thing alittle better... This is my first VB program and its some special project my boss put me on so I am learning at the same time. But really everything else in the program is working great, only the radio button and conversions that are giving me a headache.
I will try to re-structure the whole thing but do you think that this would work ? :

If metric was initially selected and optImperial.Checked then
Display RoundedImperialValue
else if imperial was initially selected and optImperial.Checked then
Display Imperial value
Else if imperial was initially selected and optMetric.Checked then
Display RoundedMetricValue
Elseif Imperial was initially selected and optImperial.Checked then
Display MetricValues
Endif

Thanks again for ure time