Kits

I have a Rebel XT with the kit 18-55, a 25-90 from the old Rebel, and a Quantaray 90-300 lense. The last two I don't use too much, so I normally carry the 18-55. Generally speaking, do I need any other lenses, or will this one work? I pretty much shoot whatever catches my interest.

No way to answer that question, since it all depends on your needs.

Do you NEED anything else - absolutly not.
You may one day find you want to take a particular shot but don't have the suitable equipment, but if you equip your self in advanced for every single ossibility - you'll be spending thousands of dollars...

Muuraija wrote in post #5853866
I have a Rebel XT with the kit 18-55, a 25-90 from the old Rebel, and a Quantaray 90-300 lense. The last two I don't use too much, so I normally carry the 18-55. Generally speaking, do I need any other lenses, or will this one work?

I think you answered your own question.

Samanax