PDF-font-embedded problem or acrobat compatibility problem with PDFExpress ??

Have you came through the font embedding problem or acrobat compatibility ? I got these problem when I was submitting my final camera ready paper to IEEE pdf-express. When first time I submitted my paper then I got the font embedding problem like :
              
Error  Font Times-Roman is not embedded (832x)
Error  Font Times-BoldItalic is not embedded (14x)
Error  Font Times-Bold is not embedded (32x)
Error  Font Times-Italic is not embedded (66x)

I embedded all fonts and submitted second time and then I got the error :

Error Acrobat version is less than 5.0

But after third submission I got the message, paper has been passed all the basic formatting requirement. So I thought to share the solution with you guys.
Here is the steps i followed:

1> latex file.tex
2> dvips file.dvi -o file.ps
3> ps2pdf -dEmbedAllFonts=true -dSubsetFonts=true -dEPSCrop=true -dPDFSETTINGS=/prepress file.ps

Alternate solution:
Use ghost script pdf printer to embed all fonts and convert into PDF.

gs -dSAFER -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -sPAPERSIZE=a4 -dPDFSETTINGS=/printer -dCompatibilityLevel=1.4 -dMaxSubsetPct=100 -dSubsetFonts=true -dEmbedAllFonts=true -sOutputFile=Final.pdf Final.ps

Some more same kind of solution: Link1 Link2

Good luck !!