Hope it will help you Add this in Your code
If Day(Me.DTPicker1.Value) >= Day(Now()) And Month(Me.DTPicker1.Value) >= Month(Now()) And Year(Me.DTPicker1.Value) >= Year(Now()) Then If Hour(Me.DTPicker2.Value) >= Hour(Now) & Minute(Me.DTPicker2.Value) >= Minute(Now) Then MsgBox "booking can not be Done", vbCritical Exit Sub End If End If From: excel-macros@googlegroups.com [mailto:excel-macros@googlegroups.com] On Behalf Of alisha malhotra Sent: Thursday, August 04, 2011 9:59 PM To: undisclosed-recipients: Subject: $$Excel-Macros$$ Need help in Meeting room booking system Hi, I am just trying to make a training hall booking system. If anyone try to book the training room or auditorium at the same date & time or between that time then it should display the error message. Second one thing is that if anyone try to delete or modify the entry then we should get the alert/email with his information. Please tell me how to do this? Regards, Alisha -- ---------------------------------------------------------------------------- ------ Some important links for excel users: 1. Follow us on TWITTER for tips tricks and links : http://twitter.com/exceldailytip 2. Join our LinkedIN group @ http://www.linkedin.com/groups?gid=1871310 3. Excel tutorials at http://www.excel-macros.blogspot.com 4. Learn VBA Macros at http://www.quickvba.blogspot.com 5. Excel Tips and Tricks at http://exceldailytip.blogspot.com To post to this group, send email to excel-macros@googlegroups.com <><><><><><><><><><><><><><><><><><><><><><> Like our page on facebook , Just follow below link http://www.facebook.com/discussexcel -- ---------------------------------------------------------------------------------- Some important links for excel users: 1. Follow us on TWITTER for tips tricks and links : http://twitter.com/exceldailytip 2. Join our LinkedIN group @ http://www.linkedin.com/groups?gid=1871310 3. Excel tutorials at http://www.excel-macros.blogspot.com 4. Learn VBA Macros at http://www.quickvba.blogspot.com 5. Excel Tips and Tricks at http://exceldailytip.blogspot.com To post to this group, send email to excel-macros@googlegroups.com <><><><><><><><><><><><><><><><><><><><><><> Like our page on facebook , Just follow below link http://www.facebook.com/discussexcel