To increase your internet speed try the following tips,
1) Check to see if faster internet connections are in your area:
Fiber optic and cable internet tend to be faster than DSL and dial-Up.
2) Do some basic maintenance on your PC:
a scan disk, a virus scan, a malware scan, and clear your recycle bin.An unusually slow Internet connection experience is often the only sign that your computer is infected with viruses or other malware. Delete old files and temporary files.
3) Reset Your Modem
Sometimes switching OFF and ON your modem helps you to speed the internet.
4) Optimize your cache or temporary Internet files.
These files improve your Internet connection performance by not downloading the same file over and over.
5) Call your Internet service provider (ISP)
Check whether upgradation of your plan is necessary.
Even if then the internet speed does not increase you can try with any software available in http://techforumindia.com/index.php?topic=5223.0 .....
After you have tried some of this,try your connection again using http://www.scanmyspeed.com/ and see if it's running any faster.