1. Introduction

2. 6 cm radio continuum observations
2.1. Source selection
2.2. VLA observational set up
2.3. Data reduction
2.4. Source extraction and catalogue

3. Identifying RMS-radio associations

4. Results and Analysis
4.1. RMS-radio associations
4.2. Detection statistics
4.3. Upper limits for non-detections

5. Discussion
5.1. Distinguishing between HII regions and PNe
5.2. Distribution of RMS-radio associations

6. Summary and conclusions