Creating a simple Windows Service

I'm Certified Force.com Developer, who have been building custom solutions using Force.com platform for last 4 years. This involves coding classes (batches, scheduled classes, email handlers), triggers and Visualforce pages (with Javascript, jQuery and CSS); adding/customizing standard and custom object. Mostly, I work on integration solutions.
(key words: Force.com, Salesforce, sObject, Apex, batch, trigger, governor limits, SOQL, Visualforce, integration, REST, Force.com IDE, Git)

Before Salesforce, for 4 years, I participated in application development using C#, Java, PHP, Qt and Action Script. Mostly, MS SQL and MySQL were used as data storage for applications.