Adobe Premiere CS5 does support for HD Video.
"there are no HD setting when i open a project"
Are you talking about the sequence settings? If you are, what kind of footage are you using? XDCAM, H264, AVCHD, etc.
"when i open footage it lags alot any way to fix this?"
What are you computer specs? Windows or Mac, Processor, RAID, RAM, etc
I have a rather old system but when I use PPRO 5, it plays footage back rather good.
I rendered the footage and it played fine, but there are no HDV settings when i first create a new project is there a way to fix this?
I have the downloaded version of just premiere cs5 not a creative suite, when i uninstall it am i still able to reinstall, and what does the adobe cleaner tool do?
>downloaded version of just premiere cs5 not a creative suite
There are TWO downloads... the program and the extra content
Did you download and install BOTH parts?
>what does the adobe cleaner tool do?
Click the link Ann provided and read