What are some good interactive marketing or web design firms in Houston and Dallas?

Range is a great one.  http://www.rangeonlinemedia.com/

You should check out http://www.atomicdc.com/,  http://www.razordriven.com or http://www.dallaspartners.com/

Click Here - the digital arm of the largest independently owned ad agency in the US - http://www.clickhere.com

Give WebDev Designs a call - http://www.webdevdesigns.com/. They're nationally respected and do great work.

We create incredible website design for your businessWhy make your site look like just another website on the internet? Give a professional look and feel to your website. We do not limit our creativity. Share your expectations, and we will be able to craft a custom design for your business which every one will envy.Designing a Impressive and effective website is quite different from just designing a general website. We are aware that Website Design should be creative as well as professional, which should achieve business goals. We develop fully customized unique website design for your business. We delivered more than 300 websites for our clients and we feel proud to make them happy with out effective website design process, we get always get unique requirement from our customers and we always take their requirement as a challenge and work hard to deliver it 100% perfect.Have a look at affordable web site design packages.Website upto 20 PagesUnique Home Page DesignAnimated BannerOnline enquiry or feedback formDomain Name for 1 year (com, in, net, org,)1GB Web space for 1 year10 Email IdsSearch Engine Friendly DesignMeta Tag Creation For All PagesSite Map CreationSearch Engine SubmissionsFree Business Directory SubmissionGoogle Local Business Centre Submission2 Month of Free Website MaintenanceProject Duration : 8-10 Business days, Offer $350 OnlyContact :

We used http://www.envisioninteractive.com for The Texas Theatre (http://www.thetexastheatre.com) and have been pleased