Ok lets get the terminology right. Yes thats called TabIndex not TextField.
Most controls in VB6 have a KeyPress event where it will do other other operations when certain keys are pressed, experiment.
I've been programming with VB for 17 years. Started with VB4 16bit Pro, VB5 Pro, VB6 Pro/Enterprise and now VB3 Pro. But I'm no expert, I'm still learning.