I would to know if there is way to use my iPad as a mouse or remote for a pc. Anyone know of any good apps for this?

Thanks in advance.

Yes There is

There is a special application just for that .
Look it up in the iStore:
Mobile Mouse (Remote/Trackpad for the iPad)

Here is the link:
Mobile Mouse (Remote/Trackpad for the iPad) for iPad on the iTunes App Store

and some explanations on the net.
just one example:
How to use your iPad as a Mouse – Mobile Mouse for the iPad | Notebooks.com

Would this be useful like a Wacom thinggy for Photoshop?

I find that a mouse is sometimes not that sensitive or as precise for retouching or other localized contrast adjustments.

With the iPad as a mouse, can I l get more sensitivity using my finger(s)?

Well I think you are asking to much from the iPAD
The touch technology on the iPAD is totally different from a Wacom board.
You may try the special pen they have for iPAD
Pogo Sketch

Thanks for the reply, I'll give it a go.

I would love if this was possible, but i have not found any way to do it. The mobile mouse software is ok, but it is not running over Bluetooth and you need to have a service preinstalled. I want to be able to run an app on my iPad and have it come up as a generic bluetooth mouse/keyboard on any computer. This would allow it to connect to basically any computer that has Bluetooth capabilities. My windows mobile phone that i had several years ago could do this, so it should be possible on the iPad.

Not available yet. Sorry. But a good idea.