Summing ActiveX Date and Time

[I heart Excel]

Hello,

I have created a form where you can select the start date and end date, and also then seperatly the start time and the end time using ActiveX Controls.

I would like it to be able total -

Date - Number of days
Time - Number of hours

Once they have been selected, is there anyway this can be done in VBA?

Have had a look and there looks like there is a calculation option but I'm not sure how to select the ActiveX Control!!

Thanks