USAGE:
Upon creating an issue, a field is added to the screen where the machine can be selected froma dropdownbox.
This field can be updated as any other field.
Data is stored in a seperate table.
When the issue is deleted, also this relation is deleted.
Upon viewing the issue, the machine data is presented as a link such that details of that machine can be viewed on screen.
This link is configurable and can point to various other applications.

Sample links are:
SMS => http://your_server_with_sms/MachDetails.asp?MachineDetails=True&Machine=
ZCI => http://your_server_with_zci/frontend/computer_details.php?compname=
Lansweeper => http://your_server_with_lansweeper/default.aspx?item=quicksearch&q=

Lansweeper also has a freeware solution ( http://www.lansweeper.com ).
ZCI is fully opensource (http://zci.sourceforge.net).