how to re-new the demo version of LabWindows/CVI?

[reqans]

i was using the demo version of LabWindows/CVI.It got expired.I downloaded from ni.com.I installed it but it is giving the message as "This Demo of LabWindows/CVI has expired?"
Kindly suggest me the solution to use it.

[Al_S]

I'd strongly suggest that you purchase LabWindows/CVI. The demo is surprising useful, but if you're doing any real development, you'll be better off with the full version.
So much for free advice.
If you saved the self-extracting file (mstudiodemo.exe) or the unzipped install files, you can uninstall and reinstall the demo. You'll get another trial period.
But you and NI will both be happier if you get the funds to purchase it.