If the Cycle property of the form is set to Current Record and Tabbing is working correctly, <Enter> should behave in the same manner, barring the presence of custom code telling Access to go to the next record if <Enter> is pressed whil ein the last control.
Only other explanation I could think of would be corruption. Corruption takes on more forms than Tony Randall in "The 7 Faces of Dr. Lao!"
The Missinglinq
Richmond, Virginia
There's ALWAYS more than one way to skin a cat!