I have both on my Win7 HP Pavilion dv7 laptop. Both are working. Quicken 2004 and Lotus SmartSuite. Version 9.8.1.
There are some restrictions with both Lotus Approach and Quicken, but otherwise they both work fine for me. I have to say that I rarely use the Lotus Suite now, but have it because a lot of my wife's books were written with WordPro. So occasionally we have to fire it up!