Leonardo, I saw part of your previous post and I have an answer for you and anyone else so I'll post here.
Here was what you had posted:
Note: i'm converting or parsing a fasta file to fq file with the follow instruction:
FileFormatConverter.exe -i:FilterRead454ReadsRaw.fasta -o:fqFilterRead454ReadsRaw.fq
And the result was:
"File Format Converter Utility V1.0
Copyright (c) 2011, The Outercurve Foundation.
Not a QualitativeSequence
The answer is that you can't get FASTQ from FASTA because FASTQ has quality scores. So in essence you are asking to convert from a format with less data to one with more. FASTQ would be the "richer" format in this
case. You should be able to reverse that from FASTQ -> FASTA though if that was your intent.