MS Access - Date & Time From/To Record Display in Report

I have created a Help Desk Call Log database. When a call is entered into the main form the current date and time is automatically filled in and put into two columns in the main table.
I have a reporting form in which the user can select from quite a few different reports. They can also select the date they want to report on. I have now been requested to add a time field for reporting. So - the user can select the from date AND time and the To date AND time to report on.
I cannot figure out how to add the time to my script to get this to work.

This is part of my existing VB script:

Dim stDocName As String
Dim stDocWhere As String

' select report and date/filtering controls
If [RepSelected] = 1 Then
stDocName = "VPO"
stDocWhere = "[Date] >= Forms!Report!FromDate And [Date]<= Forms!Report.ToDate"
endif
' do the report
DoCmd.OpenReport stDocName, acPreview, , stDocWhere

I would suggest adding time from/to fields to the calling form, and then combining the time and date fields into a single datetime, which is then used as the parameter.

I would then use the full datetime functionality in the table and have a single datetime field. Alternatively, combine the existing two fields in the query to form a single datetime field