I think the minimum salary required is 5000....although i am not sure if they require it to be the basic or gross..... ur company PRO should be able to handle all the documents at immigration....u have to provide him with the following documents from your side:

1. 6 months bank statement (from bank where ur salary is transferred)

2. your employment contract copy

3. your marriage certificate copy

4. your house lease and kharaama bill (no.) copy (if company provided then company has to give these details)

5. Your education degree certificates (highest degree obtained) (copy - not original)

6. and your original passports(yours and wifes)