vista18dc

I have windows live messenger 8.5 i have recently seen an add on for the messenger which enables you to connect your mobile to your messenger, once going though this process it says that my messenger will become orange messenger by windows live messenger, i went ahead and proceeded, but after failed attempts at linking it to my orange phone i decided to get rid of the service, but for some reason i cant and find out how you remove to orange messenger part , and just have the normal windows live messenger back ?

Any Ideas

Thanks

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Windows Vista Home Premium
Processor: AMD Athlon (tm) 64 X2 Dual Core Processor 4200+ 2.20 Ghz
Memory (RAM): 1022 MB
System Type: 32-bit Operating system