You can set the screen / xterm title using the following lines:
#!/bin/bash
mytitle="Some title"
echo -e '\033k'$mytitle'\033\\'
[UPDATE] – by request I’m also including the solution proposed by @Espo below:
Depending on your xterm version or your linux distribution the line above may or may not work and you can try the xterm-defaults:
#!/bin/bash
mytitle="Some title"
echo -e '\033]2;'$mytitle'\007'
For more on the details see: http://www.faqs.org/docs/Linux-mini/Xterm-Title.html#s3 or refer to the answer by @Espo below.