…all i can see is rev and chor followed by the volume…
You have the wrong kind of channel strip, that's for an external instrument. Even though your Virus technically is an external instrument that's not what you need to be using for the TI to work.
Up in the top left corner of the arrange window, there's a button labelled "+" next to where it says Global Tracks. Press that then choose "Software Instrument" from the drop down menu.
In the channel strip which appears in the Inspector window above where it says Stereo Out there's a grey box - click this then scroll down to AU Instruments. Now you will find the TI plug-in.
Really this is entry level beginner stuff that I'm telling you here, you would benefit from spending some time getting alot more familiar with Logic.
EDIT: Which version of Logic are you using? I'm assuming you are using Logic 9.1.3