thats what i was going to suggest - if it was only the mail you needed you could have the account automatically fwd all mail to another web-based email.
Our old uni network was like that - you could only access emails from the uni comps - but you could set it to fwd all incoming mail which helped me recieve emails even when at home.

The only prob being is that if you then reply to the email remember to fill in the address as it will be coming from your work inbox so hit reply and its going to come straight back to you

also remember to inform the people you reply to who you are as the email address will be different