Hi Gabsi Mohamed,
Jens is right. There is no such possibilities today. The best 2 things I can recommend are placing the field you need first on the page, so focus automatically is on it and secondly use the "QuickEntry" property on the fields on the page to ensure you have the right order for data entry.
I know non of this most likely gives you want you are looking for, but I thought both were worth mentioning.
Happy coding,
Soren