IEs4Linux is a beautiful little script that installs ie6 via wine. You'll need cabextract and wine to get it working.
First download the latest file here, then:
bash ~$ sudo yum install wine* cabextract bash ~$ tar zxvf ies4linux-latest.tar.gz bash ~$ cd /ies4linux-latest bash ~$ ./ies4linux
It'll prompt you with some questions, and install ie for you.