code5 error

[KTTL_CRN]

ok i have no idea but when ever i download teamspeak2 it says at the end of downloading error code5 could not be found or something wut is up with that??? i would like it to work on my computer so plz help

[KTTL_CRN]

it says this exactly:

Error creating registry key:
HKEY_CLASSES_ROOT\teamspeak

RegCreateKeyEx failed; code 5
Access is denied.

Click to try again, Ignore to proceed anyway, or abort to cancel installation.

i don't get why either?