If you have a good knowledge of programming languages in conjunction with Informix and you would like to share your knowledge with others in order to help them getting started with Informix Application Development then you might take a look at this IBM Residency offer:

• Residency Details: Migrating from SQL Server to IBM Informix Dynamic Server

If you have a good knowledge of MS SQL Server and you would like to share your knowledge with others in order to ease the migration process from MS SQL Server to IDS then please take a look at this IBM Residency offer:

• Residency Details: Migrating from SQL Server to IBM Informix Dynamic Server

IBM has recently released a new RedBook, called "Security and Compliance Solutions for IBM Informix Dynamic Server"

It looks to be a comprehensive review, covering:

Role separation;
Auditing;
SQL security;
Communication; and
Backup security

It looks well worth a read.

Security is a big issue and I don't find most people take it seriously enough. Have a look at an optimally secure system design, then look at where your environment diverges from that. Break the deficiencies into bite-sized chunks that you can address as and when you have time.