OpenType (CFF): the preussTYPE standard
Mac PostScript: Requires Adobe Type Manager
on all Mac versions prior to OSX.
PC PostScript: Requires Adobe Type Manager on
all Windows versions prior to 2000.
PC TrueType (TTF): The native font format for
Windows.
Interchanging PostScript & TrueType versions of the same font is not recommended, as each format has different ways of handling vertical line spacing, among other things.
Because of this preussTYPE prefers the OpenType format (CFF).
This format can be used without problems on the two platforms. The result
is same everywhere.
If you, however, need formats mentioned above, we like to convert your fonts
for you...
If this solution sounds like something you need, 
for a quote.
You need more infos about OpenType?
• what
is OpenType?
• advanced
typography
• multiple
languages
• supported
applications
• Myfonts.com
Extended Langauge Support
If you need extended character sets (Central and Eastern European) we would
be happy to consult on building a custom set.