Using Return key as Tab key in an Unbound field in Data Access Pages

[zeg37]

I am working with a data access page and I have an unbound text field
that is used to search for specific records from my database. I would
like to limit the amount of text a user can type into the field, or
better yet write code to cause the enter key to respond like a tab key.
I've found a variety of java code and some visual basic code for
changing the enter key, but haven't had any success getting it to
run. I would prefer to use VBScipt if possible.

I have tried many variations of the code below without success:

<Script language=vbscript event=onkeypress for=vProject>

<!--
Sub vProject_KeyPress (KeyAscii as Integer)
If KeyAscii = 13 then
KeyAscii = 0
Sendkeys "{TAB}"
End If
End Sub
-->
</SCRIPT>

Any suggestions would be greatly appreciated.

Deb