Oscommerce + Google Checkouts intergration + PHP fixes

Note - this is a re-listed project, last provider failed to deliver. ***URGENT JOB - WE NEED THIS TASK FINISHED ASAP!*** We recently hired a coder for some reasonably large modifications to our Oscommerce install. While he has done the majority of the work, there are still some bugs that need fixing. Not only that, but since the work was done the site runs incredibly slowly, we're not sure if this is due to poor coding or our host, but we'd like someone to take a look for us. These are simple fixes, probably wouldn't take an experienced coder longer than an hour. Also, we need Google Checkout installed and working on our site. Again, very simple, shouldn’t take longer than 20 minutes for someone who knows their way around it. As it really is only 1 1/2 hours work, 2 at the most, we're not looking to pay more than $50 for this. As said above, we need this task finished today really, a provider will be picked in the next 4-5 hours. IF YOU CANNOT WORK ON THIS TONIGHT, PLEASE DO NOT BID. We look forward to working with you, Lewis and Oliver.