This study will be performed in both high risk and low risk patients who are considered good candidates for endoluminal repair of abdominal aortic aneurysms. Patients should be heparinized during the implant procedure such that an activated clotting time of 300 seconds is achieved. During implantation of the TALENT endoluminal stent-graft, the pre-implant CT scan and available angiograms are used together with (on-the-table) digital subtraction angiography (DSA), roadmapping, and angiography for proper implant positioning. The TALENT endoluminal stent-graft endoprosthesis is inserted by delivery catheter and introducer sheath via a surgical cutdown (e.g., external iliac artery, femoral artery) approach. The introducer sheath and delivery catheter containing the stent-graft is inserted over a guidewire and advanced into the aorta and above the aneurysm. With the delivery catheter in the correct position, the push rod is held stationary while the outer sheath is slowly withdrawn. The introducer sheath is then withdrawn further until the stent-graft is completely deployed. The balloon may be inflated along the full length of the implanted device to model the springs against the vessel wall and to unravel possible wrinkles in the graft fabric. After deployment of the stent-graft, angiography is performed to verify implant position and to check for the presence of endoleaks.