I keep getting these offers of an update from Java, do I really need these, I'm quite happy with my year old machine performance and, if these aren't necessary, how can I switch these offers off please.

My Computer
- Computer type
- Laptop
- Computer Manufacturer/Model Number
- Aspire 5742Z
- OS
- Win 7 Home Premium 64bit
- CPU
- Intel Pentium P6200
- Memory
- 6GB DDR3
- Sound Card
- External..internal one caput
- Hard Drives
- 640GB
- Keyboard
- Separate
- Mouse
- Separate..Trust
- Internet Speed
- Plusnet not too bad here
- Antivirus
- Kasp
