Two small video editing projects needed

I have two .mov files that need editing. For one video, I just need a new title screen and for that screen to stay on the screen longer than it does now and then I need a closing screen. Both don't have to be animated but it would be nice if they transitioned nicely. I will provide the image for the beginning and the end of the movie. All you need to do is add them to the movie. For some reason I am having trouble doing this in Adobe Premiere, I used to know how to use it but I haven't been video editing for quite some time and would rather someone else do it. The movie size is 960x540 and for some reason that size is giving me problems. The second project involves chopping up a video that we have that we want to repurpose. We have a promotional video that we want to take out most of the scenes and just use a small section of it for a different project. We want to take out the audio and add about 4 different sections of text instead of the audio because this movie is getting played on a screen where there wouldn't be audio. We want it to look good so please consider taking time to transition the text nicely. Also, on this movie are screenshots of an iphone and we want to replace one of the screenshots which I will supply. I also want to replace the last frame with a slightly different image. This movie is 720x480 and the original movie was less than a minute and we will probably only need 15-20 seconds of it. Both of these projects should be easy but for some reason I am having trouble with the movies distorting in Adobe Premiere. If you happen to use Premiere and know why that is feel free to add time to explain it in your bid. Thanks for your time.