In Premiere, under Preferences, change the Still Image Default Duration to 1 frame. Then import your images. If they are numbered sequentially, you should be able to select them all and drag them right onto a timeline.
Another option is to import all files as an image sequence so that they will be treated as a single clip in PrPro. But I actually prefer Joe's method because you have separate control over each and every frame if needed. It can still sort of be treated as a clip that way if you put them all inside a nested sequence.
Software Quality Assurance - Digital Video at Adobe Systems