Not even VBA will let you change the cell widths in smaller increments (as far as I know).
Consider a monospaced (aka nonproportional or fixed-width) font. The TrueType fonts can also have their font-size changed in increments of less than 1, but there aren't many TrueType monospaced fonts (Courier New, Lucida Console, Lucida Sans Typewriter, although you can download new fonts easily from the web (even design your own!)). There are lots of non-TrueType fonts which are monospaced too.