First the OS is called Ubuntu, not ubantu. Second, if you computer ran vista fine then you will have no problem with ubuntu. You may need to get some drivers for your wireless keyboard and mouse though, if there aren't any on the cd.
As for how much faster your computer will be with ubuntu is all relative. The answer is yes if you mean will you be able to run more program with less ram usage. I would recommend that you download and use the live cd to install Ubuntu. it is just a lot easier for newbies like your self. When it comes to choosing your partition, i would recommend that you don't try to fool with the partition sizes unless you are sure that you have a handle on it. This is because you will see that there needs to be more than one partition for linux. But that is jumping ahead of myself.
If you have any other questions feel free to ask, and we can help you with them.
Cheers and welcome to the light side!
As for how much faster your computer will be with ubuntu is all relative. The answer is yes if you mean will you be able to run more program with less ram usage. I would recommend that you download and use the live cd to install Ubuntu. it is just a lot easier for newbies like your self. When it comes to choosing your partition, i would recommend that you don't try to fool with the partition sizes unless you are sure that you have a handle on it. This is because you will see that there needs to be more than one partition for linux. But that is jumping ahead of myself.
If you have any other questions feel free to ask, and we can help you with them.
Cheers and welcome to the light side!