Keyboard layout editors for Win64

[j7n]

I have two keyboard layouts that allow me to enter great many useful characters using dead keys, such as superscript, fractions, euro sign, micro sign, common diacritics and to type Russian using a conventional QWERTY layout. I discovered that on Windows 2008 R2, I need the layout as a 64-bit DLL. The layouts I have are in NT5 DLL and Win98 KBD formats, and the Tilde Keyboard Editor software supports only these formats. They apparently have never updated it for new Windows and don't offer it anymore at all.

What is a good, small program without bloated frameworks that can convert these layouts to 64-bit for winNT 6.1 with minimal effort? Why is a keyboard layout a DLL in the first place instead of a data table that could be used across different OS architectures?

So much stuff does not work on 64-bit. Every program with a driver inside. Jesus.