
The font that is actually provided is URW Nimbus Sans (A Helvetica clone). An enhanced version is available with the TeX Gyre Heros font.

[Click on text example to enlarge] [PDF sample]
[LaTeX source of PDF sample]
\usepackage[scaled]{helvet}
\renewcommand*\familydefault{\sfdefault} %% Only if the base font of the document is to be sans serif
\usepackage[T1]{fontenc}
\normalfont
\slshape
\bfseries
\bfseries\slshape
Helvetica is available as Type 1.
http://www.ctan.org/tex-archive/fonts/psfonts/psnfss-source/